Seiko 7B27 Operating instructions

Category
Watches
Type
Operating instructions
68
70
Contents
1. About This Product
Handlingcautions・・・・・・・・・・・・・・・・・・・・・・・・・72
Features・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 76
Displayandbuttonoperation・・・・・・・・・・・・78
HowtouseButtonAandB・・・・・・・・・・・・・ 80
Crown・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・81
2. Before Use
Beforeuse・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・82
3. World time function
Howtousetheworldtimefunction・・・・84
Howtoselectthetimezone(Howto
displaythelocaltimearoundtheworld)
・・・86
Timezonedisplayandtimedi󰮏erence
table・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・88
Q&Afortheworldtimefunction・・・・・・・ 90
4. How to Set the Time (Radio Signal Reception)
Settingthetimeanddate
byreceivingaradiosignal・・・・・・・・・・・・・・・ 91
Aboutreceptionconditions・・・・・・・・・・・・・・93
Howtocheckthereceptionresults・・・・96
5. Solar Charging Function
Aboutcharging・・・・・・・・・・・・・・・・・・・・・・・・・・・・
102
Aboutenergy・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
104
6. To Preserve the Quality of Your Watch
Dailycare・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
106
Performanceandtype・・・・・・・・・・・・・・・・・・・・
106
Waterresistance・・・・・・・・・・・・・・・・・・・・・・・・・・
107
Magneticresistance・・・・・・・・・・・・・・・・・・・・・・
108
69
※Lengthadjustmentserviceformetallicbandsisavailableat
theretailerfromwhomthewatchwaspurchasedorSEIKO
CUSTOMERSERVICECENTER.Theservicemayalsobeavailable
onachargeablebasis.
 Theservicemayalsobeavailableatotherretailers,however,
someretailersmaynotundertaketheservice.
Thank you very much for choosing a SEIKO watch.
For proper and safe use of your SEIKO watch,
please read carefully the instructions in this
booklet before using.
Keep this manual handy for easy reference.
71
1
2
3
4
5
6
7
8
Band・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
110
Specialclasps・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
112
Powersource ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
116
Lumibrite・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
117
After-saleservice・・・・・・・・・・・・・・・・・・・・・・・・・・
118
7. Troubleshooting
Howtoconductmanualreception
(Receivingaradiosignalmanually) ・・・・
119
Whenthewatchisunabletoreceive
radiosignals・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
121
Preliminaryposition・・・・・・・・・・・・・・・・・・・・・・・
126
Howtocorrectthepreliminary
positions・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
127
Attrouble・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
130
Incaseofanabnormalmovement・・・・・・
134
8. Specications
Specications・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
135
72
Keepthewatchandaccessoriesoutofthereachofbabiesandchildren.
Careshouldbetakentopreventababyorachildaccidentallyswallowingtheaccessories.
Ifababyorachildswallowsthebatteryoraccessories,immediatelyconsultadoctor,asit
willbeharmfultothehealthofthebabyorchild.
WARNING
Immediatelystopwearingthewatchinfollowingcases.
Ifthewatchbodyorbandbecomesedgedbycorrosionetc.
Ifthepinsprotrudefromtheband
Immediatelyconsulttheretailerfromwhomthewatchwaspurchasedor
SEIKOCUSTOMERSERVICECENTER.
Toindicatetherisksofseriousconsequencessuchassevereinjuriesunlessthefollowing
safetyregulationsarestrictlyobserved.
Donotremovethesecondarybatteryfromthewatch.
Aboutthesecondarybattery
PowersourceP.116
Replacementofthesecondarybatteryrequiresprofessionalknowledgeandskill.Pleaseask
awatchretailerforreplacementofthesecondarybattery.
Installationofanordinarysilveroxidebatterycangenerateheatthatcancauseburstingandignition.
Handling cautions
AboutThisProduct
1
74
Do not use the watch in scuba diving or
saturation diving.
Thevarioustightenedinspectionsundersimulatedharsh
environment,whichareusuallyrequiredforwatchesdesigned
forscubadivingorsaturationdiving,havenotbeenconducted
onthewater-resistantwatchwiththeBAR(barometric
pressure)display.Fordiving,usespecialwatchesfordiving.
Do not pour running water directly from faucet.
Thewaterpressureoftapwaterfromafaucetishighenough
todegradethewaterresistantperformanceofawater
resistantwatchforeverydaylife.
AboutThisProduct
1WARNING
CAUTION
73
Avoidwearingorstoringthewatchinthefollowingplaces.
Placeswherevolatileagents(cosmeticssuchaspolishremover,bugrepellent,thinnersetc.)arevaporizing
Placeswherethetemperaturedropsbelow5℃orrisesabove35℃foralongtime
Placesofhighhumidity
Placesa󰮏ectedbystrongmagnetismorstaticelectricity
Dustyplaces
Placesa󰮏ectedbystrongvibrations
CAUTIONS
Ifyouobserveanyallergicsymptomsorskinirritation
Stopwearingthewatchimmediatelyandconsultaspecialistsuchasadermatologistoranallergist.
Othercautions
Replacementofthemetalbandrequiresprofessionalknowledgeandskill.Pleaseaskawatchretailer
forreplacementofthemetalband,asthereisariskofhandorngerinjuryandfearoflosingparts.
Donotdisassembleortamperwiththewatch.
Keepthewatchoutofthereachofbabiesandchildren.Extracareshouldbetakentoavoid
risksofanyinjuryorallergicrashoritchingthatmaybecausedwhentheytouchthewatch
.
Whendisposingofusedbatteries,followtheinstructionsofyourlocalauthorities.
Ifyourwatchisofthefoborpendanttype,thestraporchainattachedtothewatchmay
damageyourclothes,orinjurethehand,neck,orotherpartsofyourbody.
Toindicatetherisksoflightinjuriesormaterialdamagesunlessthefollowingsafetyregulations
arestrictlyobserved.
AboutThisProduct
1
75
Do not turn or pull out the crown when the watch is wet.
Watermaygetinsideofthewatch.
Iftheinnersurfaceoftheglassiscloudedwithcondensationorwaterdroplets
appearinsideofthewatchforalongtime,thewaterresistantperformanceofthe
watchisdeteriorated.Immediatelyconsulttheretailerfromwhomthewatchwas
purchasedorSEIKOCUSTMERSERVICECENTER(listedontheendofabook).
Do not wear the watch while taking a bath or a sauna.
Beawareofariskthatawaterresistantwatchmaylessenits
waterresistantperformancebecauseofdeteriorationofthe
adhesiveontheglassorgasket,orthedevelopmentofrust
onstainlesssteel.
Do not leave moisture, sweat and dirt on
the watch for a long time.
Steam,soaporsomecomponentsofahotspringmay
acceleratethedeteriorationofwaterresistantperformanceof
thewatch.
AboutThisProduct
1
CAUTIONS
76
Features
World Time Function........... Byselectingatimezone,thewatchcandisplaythelocaltimeinthe
selectedtimezonearea.
Radio Signal Receiving Function
...
Thewatchmaintainstheprecisetimebyautomaticallyreceiving
radiosignalsono󰮐cialstandardfrequencies.Manualreceptionof
radiosignalsisalsopossible.Thewatchcanreceiveo󰮐cialstandard
frequenciesfromJapan,China,andtheU.S.A(selectthereceiving
stationusingtheworldtimefunction).
Display Function of Radio Signal Reception Results...
Themovementofthesecondhandindicatesradio
signalreceptionresults(Yes/No).
P.84
P.91
P.96
Thissolarradio-controlledwatchisequippedwiththeworldtimefunction.
Byselectingatimezone,thewatchcanautomaticallydisplaythelocaltimeina
di󰮏erenttimezonearoundtheworld.
Thewatchindicatestheprecisetimebyautomaticallyreceivingradiosignalsono󰮐cial
standardfrequencies.(Thewatchcanreceiveo󰮐cialstandardfrequenciesfromJapan,
China,andtheU.S.A.)
AboutThisProduct
1
78
AboutThisProduct
1Display and button operation
Crown
Button A
Button B
P.80
P.80
Theoperationmethodofthebuttonvaries
withthefunctionbeingused.Followthe
instructionsofeachsectionofthisbooklet.
Theoperationmethodofthebuttonvaries
withthefunctionbeingused.Followthe
instructionsofeachsectionofthisbooklet.
Normalposition:Howtoselectthetimezone P.86
Checkingthereceptionresult
 P.96
Manualreception P.119
Firstclick:
Manualdatesetting
 P.124
Secondclick:
Manualtimesetting
 P.122
Resettingthebuilt-inIC
 P.134
Ifyourwatchhasascrewlocktypecrown,
keepitlockedwhileyouarewearingthewatch.
 
CrownP.81
20 1
Date
Main Watch
Minute hand
Hour hand
Second hand
77
Display Function of Radio Signal Reception Level .......
Themovementofthesecondhandindicatesthe
radiosignalreceptionlevelduringradiosignalre-
ceptionattempts.(onlywhenthewatchisreceiving
radiosignalsbymanualoperation.)
Solar Rechargeable Battery ................Asolarcellunderneaththedialconvertsanyformoflightinto
“electricalenergy”topowerthewatchandthepowerisstored
inasecondarybattery.Oncefullycharged,thewatchcontinues
torunforapproximatelysixmonths.
Energy Depletion Forewarning Function ...
Themovementofthesecondhandindicateswhenthebattery
shouldbecharged.
Power Save Function
.................................
ThePowerSavemodeisactivatedwhenthewatchisleftwith-
outanadequatelightsourcetoreduceenergyconsumption.
Automatic Hand Alignment Function
...
A󰮏ectedbymagnetismorotherexternalsources,when
thehandalignmentsaredeviated,thewatchautomatically
correctsthehandalignments.
P.119
P.102
P.104
P.105
P.126
AboutThisProduct
1
79
AboutThisProduct
1
Standard Frequencies Transmitting Station Display
Time zone selection
→P.86
Citynames・・・ 25citiesaround
theworld
DisplaystimezoneintheStandard
FrequenciesTransmittingStation.
・・・JJY(Japan)
・・・BPC(China)
・・・WWVB(TheU.S.A)
Time Zone Display
Display of Radio Wave Reception Result
Checking the reception results
 P.96
Display of Radio Wave Reception Level
H
・・・ Highreceptionlevel
(50-secondposition)
L
・・・ Lowreceptionlevel
(40-secondposition)
N
・・・
Unabletoreceiveradiosignals
(20-secondposition)
Manual reception
P.119
Y
・・・ReceptionSuccessful
(10-secondposition).
N
・・・ Receptionfailed
(20-secondposition).
Indicationonthebezelorpositionsofeachitemonthedial
mayvarydependingonthemodel(design).
80
How to use Button A and B
ButtonsAandBarerecessedinthewatchcasetoimprovethedesignandtoprevent
erroneousoperation.Pleaserefertothefollowingguresforhowtopressthebuttons.
AboutThisProduct
1
※Thebuttonshapevariesdependingonthedesign.
<How to use>Press it using an object with a long tapered tip, etc.
Buttonentirely
covered
Buttonisrecessed
inthewatchcase
※
Pressthelowerhalfof
theButtonwithyournger.
UpperhalfoftheButtoniscovered
Buttonhas
ahollow
※
Commonto
bothButtons
AandB
<How to use>Press with your nger.
Buttondoesnot
haveahollow
※
ButtonBdoes
not h ave t his
structure.
Buttonprotrudesfromthewatchcase
Buttonpartiallycovered
Both Buttons A and B have a hollow
Pressthebuttonsusinganobjectwithalongtaperedtipholdingthe
watchasshownintheguresothatthewatchdoesnotmove.
Button A does not have a hollow, and Button B has a hollow
PressButtonAwithyourngerandButtonBusinganobjectwitha
longtaperedtip.
When pressing Buttons A and B at the same time
Makesuretoconrm“HowtouseButtonsAandB”asshownabovebeforepressingthebuttons.
First,pressButtonB,andpressButtonAwhilepressingButtonBsoastopressthemsuccessfully.
※Press t he b uttons on  a
soft cloth or t he like b efore
operationinorderto prevent
damagetothewatch.
82
Whenthemovementofthesecondhandshowsanenergydepletionstate,thebattery
requirescharging.
BeforeUse
2
1. Checking the charging status
Before use
Ifthesecondhanddoesnotmoveatone-secondintervalsevenafterfullychargingthebattery
“Chargingthesolarbattery”inTroubleshootingonP.131
Thesecondhandmoves
atone-secondintervals.
Thesecondhandmoves
attwo-secondintervals.
Thesecondhandmoves
atve-secondintervals.
Thewatchis
su󰮐cientlycharged.
Theenergydepletionforewarning
functionisactivated.→P.10 4
Chargethebatterysu󰮐ciently.
Thepowersavefunctionisactivated.
P.105
Checkthemovementsofthesecondhand
afterreleasingthepowersavemode.
Thewatchcompletelystopsoperating.
Asthechargedenergyisdepleted,
chargethebatterysu󰮐ciently.
Howto
chargethe
watch
→P.102
Thesecond
handisstopped.
81
AboutThisProduct
1
Crown
Therearetwotypesofcrowns,anormalcrownandascrew-lockcrown.
Checkthecrownonyourwatch.
The
crown
does not
turn.
The crown
turns.
Tur nthe
crown
clockwise.
※
Ifyourwatchhasascrew-lockcrown,thecrownscrewsintothewatchtopreventmalfunctionandincreasewaterresistance.
※Becarefulnottoscrewthecrowninbyforceasitmaydamagetheslotsofthecrown.
Normal crown
Screw-lock type crown
Pull out the crown and operate it.
Unlockthecrownbeforeoperatingit.
Afteroperating
thecrown,lockit.
Screw
While pressing
the crown
Unscrew
83
BeforeUse
2
2. Checking the time and date
Thehandsofthiswatchcannotbemovedbyturningthecrown.Whenadjustingthe
timeanddate,refertothefollowingpages.
Whenthetimeand
datearecorrect
Whentheradio
signalcanbe
received
Usethewatchwithout
adjustment.
Wheneitherthe
timeordateis
incorrect
Whenaradio
signalcannot
bereceived
Howtosetthe
timezone→
P.86
Settingthetimeand
datebyreceivinga
radiosignal→P.91
Manuallysetthetime
P.122-123
Manuallysetthedate
→
P.124-125
Aboutreceptionconditions
P.93
Environmentsinwhichitisdi󰮐culttoreceivearadiosignal
P.99
Ifeitherthetimeordateisincorrect,eventhougharadiosignalwasreceivedsuccessfully→“Misalignmentofthe
timeandhandpositions”inTroubleshootingonP.132and“Misalignmentofthedate”inTroubleshootingonP.133
84
How to use the world time function
World time function
HowtoselectthetimezoneP.86
Timezonedisplayandtimedi󰮏erencetableP.88
If the time zone is set to Japan, China, and the U.S.A, the watch displays the precise
time and date by receiving radio signals, provided that the watch is within the radio
signal reception range.
IntheTimeZoneSettingmode,
thesecondhandindicatesthe
selectedtimezone.
The local time in a di󰮏erent time zone can be displayed by selecting a time zone
among 25 regions around the world.
Thewatchisunabletoreceiveradiosignalsoutsidethereceptionrange.
AboutreceptionconditionsP.93
Worldtimefunction
3
Timezoneindication
86
How to select the time zone (How to display the local time around the world)
Within 10 seconds after procedure 1. is completed, start the operation of procedure 2..
Ifthewatchisleftuntouchedfor10secondsafterthesecondhandstops,thewatchautomatically
returnstotheTIMEdisplaymode.Ifthishappens,restarttheoperationfromprocedure1..
TopressButtonB,useanobjectwithalong
taperedtip.
P.80
Worldtimefunction
31.
Keep pressing down Button B (for
3 seconds) until the second hand
stops.
Thesecondhandstartstomoveandstops
pointingtothecurrentlyselectedtimezone.
2. Within 10 seconds after carrying
out procedure 1., press Button
A or B to set the second hand
to point at the target time zone
index.
Witheachpressingofthebutton,thesec-
ondhandmovestotheadjacenttimezone
index.
Button A
2.
for clockwise
turn
Button B
1.
for 3 seconds
2.
for counter-
clockwise turn
85
LocaltimeinJapan: 6th.,10o’clock,8minutes,and42seconds
LocaltimeinHonolulu:5th.,15o’clock,8minutes,and42seconds
Example:HowtodisplaythelocaltimeinHonolulu(HowtosetthetimezonetoHNL(Honolulu))
Whenthetimezoneisselected,thedateisautomaticallyadjustedinconjunctionwith
thetime.
Worldtimefunction
3
<Beforetimezonesetting> <Aftertimezonesetting>
87
Worldtimefunction
3
3. Wait for ten seconds after
the movement of the hour
and minute hands stop.
(The time zone adjustment
mode is nished.)
Thesecondhandstartstomove.
Thewatchautomaticallyadjusts
thedateasnecessary.
Whilethedateismoving,neitherthe
buttonsnorthecrowncanbeoperated.
The radio signal transmitting station
can be changed by selecting the time
zone. When selecting a time zone for
regions other than the radio signal
reception ranges, the radio signal
reception function will not work.
WhensettingDaylightSavingTime(DST),addonehour
tothetimezoneofadesiredarea.
Timezone
displayandtime
di󰮏erencetable
P.88
Inothercountries
InJapan InChina
Setthesecond
handtothe23
secondposition.
Setthesecond
handtothe21
secondposition.








󰮏



























































Time zone display and time di󰮏erence table







󰮏































































󰮏 

90
Worldtimefunction
3
Q:WillthewatchbeautomaticallysettothelocaltimewhenitismovedtoaplaceoutsideJapan
inadi󰮏erenttimezone?
A:Thewatchwillnotbeautomaticallysettothelocaltimeifitisjustmovedtoaplaceoutside
Japaninadi󰮏erenttimezone.Selectthetimezonewhereyouarewhenyouareabroad.
Ifyouselectthetimezone,thewatchisautomaticallysettothelocaltime.
(Thetimedi󰮏erencecanbeadjustedinincrementsof1hour.)
Afterselectingthetimezone,ifitiswithinthereceptionrangeofradiosignals,youcanleave
thewatchtoreceivetheradiosignaltosetittotheprecisetime.
(Theradiosignaltransmittingstationcanbechangedbyselectingatimezone.)
Q:WhenreturningtoJapanfromoverseas,isthetimeautomaticallysettoJapantime?
A:
JustmovingcannotadjusttheJapaneselocaltime.Afterselectingthetimezone,radiosignalreceptionisnot
performed.WhenwearingawatchinJapan,settoJapantimebyuseofthetimezoneadjustmentfunction.
Q:Thehandsstopduringoperationoftimezonesetting,therefore,doesatimelagoccur?
A:Theinternalcircuitstoresthetime,therefore,notimelagoccurs.
Q:Whenatimezoneforregionsoutoftheradiosignalreceptionrangeisset,thewatchwillnot
receivearadiosignal.Howistheaccuracyofthewatchatthattime?
A:Thewatchhasanaccuracyofanormalquartzwatchinthatcase.(Monthlyrate:±15seconds)
Q:Howisadjustmentmadetoalocaltimewithatimedi󰮏erenceof15minutesor30minutes?
A:Thetimecanbeadjustedona1hourbasisbyuseofthetimedi󰮏erenceadjustmentfunction.
Whenadjustingtoalocaltimewithatimedi󰮏erenceof15minutesor30minutes.
HowtomanuallysetthetimeP.122
Q & A for the world time function
89
Worldtimefunction
3
BasedonCoordinatedUniversalTime(UTC),thestandardtimecommonly
usedisadoptedbycountriesandregionsaroundtheworld.Thestandard
timeisdeterminedbyeachcountryorregion,andtheregionwherethe
samestandardtimeisadoptedisreferredtoasthetimezone.Further,
DaylightSavingTime(DST)isindividuallyadoptedincountriesandregions.
[What is UTC (Coordinated Universal Time)?]
 UTCistheuniversalstandardtimecoordinatedthroughinternationalagreement.
Itisusedastheo󰮐cialtimearoundtheworld.UTCisdeterminedbyaddingaleap
secondtoGMT(GreenwichMeanTime),whichisdeterminedthroughastronomical
measurementinordertokeeptheprecisetime.
[What is summer time (DST)?]
 SummertimeisDaylightSavingTime.Advancingthewatchonehourtoprolong
daytimeduringlongerdaylighthoursinsummer.Theadoptionanddurationof
DaylightSavingTime(DST)variesdependingonthecountry.
Timedi󰮏erencesbetweenregionsandDaylightSavingTimemaychangeduetocircumstancesofacountryorregion.
Insomeregions,timezonesthatdi󰮏erfromUTCbyhalf-orquarter-hourtimedi󰮏erencesareestablished.(For
example,somepartsofIndia.)
What is a time zone?
91
Transmitting
Station
Cesium
AtomicClock
Radio-controlledwatch
Receiveradiosignals
throughtheantennainside
thewatch
Analyzetimeinformation
Displaythecurrenttime
anddate
O󰮐cialstandard
frequency
Mechanism of radio signal reception
Theradio-controlledwatchdisplaystheprecisetimeanddatebyautomaticallyreceiv-
ingandsynchronizingitselfwiththeradiosignalofano󰮐cialstandardfrequency.
Thestandardfrequencyfortimeinformationcomesfroma“cesiumatomicclock,”which
maintainstheultra-precisionofaone-seconddi󰮏erenceaboutevery100,000years.
Setting the time and date by receiving a radio signal
4
HowtoSettheTime(RadioSignalReception)
92
IfthetimezoneissettoaregionotherthanJapan,China,andtheU.S.A,thesignalreceptionfunctionwill
notwork.
Timezonedisplayandtimedi󰮏erencetableP.88
RadioSignalreceptionresultsdependonthereceivingcondition.
Environmentsinwhichitisdi󰮐cultto
receivearadiosignalonP.99
Thiswatchisunabletoreceiveradiosignalsoutsideareceptionrange
Aboutreceptionconditionson
P.93
Ifeitherthetimeordateisincorrect,eventhougharadiosignalwasreceivedsuccessfully→“Misalignment
ofthetimeandhandpositions”inTroubleshootingonP.132and“Misalignmentofthedate”inTrouble-
shootingonP.133
Manual reception
Whenthiswatchcannotautomaticallyreceivearadiosignalduetoadi󰮐cult
receivingenvironment,itispossibletoreceivesignalsarbitrarilyatanytime.
→HowtoconductmanualreceptionP.119
Automatic reception
Thiswatchsetsthetimeanddatebyautomaticallyreceivingaradiosignalataxed
time.Itautomaticallyreceivesaradiosignalbefore2:00AM,3:00AMand4:00AM.
Whenthewatchsuccessfullyreceivesaradiosignal,itwillstopautomaticreception.
Automatic reception and manual reception
Placethewatchinaplacewhereitcaneasilyreceivearadiosignalsuchasnearawindow.
Whilethewatchisreceivingradiosignals,donotmoveit.
ToImproveradiosignalreceptionP.98
4
HowtoSettheTime(RadioSignalReception)
94
4
HowtoSettheTime(RadioSignalReception)
Radio signal reception range: China (BPC)
Thereceptionrangefromthetransmittingstationisapproximately1,500km(1,500
kmradiusofthetransmittingstation).
BPC is operated by NTSC.
Shangqiu National Time Service Center
Frequency: 68.5kHz
NTSC:NationalTimeServiceCenter
Thewatchmaybeabletoreceiveradiosignals
outsideareceptionrangeifthereceivingconditions
arefavorable.
Thewatchmayfailtoreceiveradiosignalsdepending
onthereceptionconditions(weather,geographic
locations,radiodisturbancessuchastallbuildings,
andorientationofthewatch).
Environmentsinwhichitisdi󰮐culttoreceivea
radiosignalP.99
ShangqiuNational
ShangqiuNational
TimeServiceCenter
TimeServiceCenter
(68.5kHz)
(68.5kHz)
Approx.1,500km
Approx.1,500km
93
HowtoSettheTime(RadioSignalReception)
4
About reception conditions
ThiswatchreceivesstandardradiosignalsfromJapan(2stations),China,andtheU.S.A.
Whenyousetthewatchtoeachtimezone,theo󰮐cialstandardfrequenciesthewatchreceiveswillbe
automaticallychangedaccordinglytotheselectedtimezone.→HowtoselectthetimezoneP.86
Radio signal reception range: Japan (JJY)
Thereceptionrangefromeachtransmittingstationisapproximately1,000km(1,000kmradiusofeachstation).
JJY is operated by the National Institute of
Information and Communications Technology (NICT).
JJY is transmitted from two stations in Japan.
Each station transmits JJY in a di󰮏erent frequency.
Fukushima (Ohtakadoya-yama
transmitting station: 40 kHz)
Kyushu (Hagane-yama transmitting
station: 60 kHz)
NICT:NationalInstituteofInformationand
CommunicationsTechnology

Whetherthewatchsucceedsinreceivingradio
signalsornotdependsonthereceivingconditions.
Environmentsinwhichitisdi󰮐cultto
receivearadiosignalP.99
Ohtakadoya-yama
Ohtakadoya-yama
transmittingstation
transmittingstation
(40kHz)
(40kHz)
Hagane-yama
Hagane-yama
transmitting
transmitting
station(60kHz)
station(60kHz)
Approx.1,000km
Approx.1,000km
Approx.1,000km
Approx.1,000km
95
HowtoSettheTime(RadioSignalReception)
4
WWVB is operated by NIST.
Fort Collins transmitting station
Frequency: 60 kHz
NIST:NationalInstituteofStandardsand
Technology
Thewatchmaybeabletoreceiveradiosignals
outsideareceptionrangeifthereceiving
conditionsarefavorable.
※
Thewatchmayfailtoreceiveradiosignals
dependingonthereceptionconditions(weather,
geographiclocations,radiodisturbancessuch
astallbuildings,andorientationofthewatch).
→
Environmentsinwhichitisdi󰮐culttoreceive
aradiosignalP.99
Radio signal reception range: the U.S.A (WWVB)
Thereceptionrangefromthetransmittingstationisapproximately1,500km(1,500km
radiusofthetransmittingstation).Therearefourtimezoneswithinthereceptionrange.
FortCollins
FortCollins
transmittingstation
transmittingstation
(60kHz)
(60kHz)
Approx.1,500km
Approx.1,500km
Button A
1.
Press once
and release
it.
96
4
HowtoSettheTime(RadioSignalReception)
About reception result display
Thesecondhandindicatesthelatestradiosignalreceptionresults(Yes/No)forve
seconds.
How to check the reception results
1.
Press Button A once and release it.
Thesecondhandindicatesthereception
results.
2. Check if the reception was
successful (within ve seconds).
Ifthereceptionwassuccessful: Y
(the 10-second position)
BPC
JJY
Ifthereceptionfailed: N
(the 20-second position)
When5secondshaveelapsedorifButtonAis
pressed,thewatchreturnstotheTIMEdisplaymode.
98
To Improve radio signal reception
Place the watch in a place where it can easily receive a radio signal such as near a
window.
Theantennaisembeddedatthe9o’clockpositionofthewatch.Turningtheantenna
towardtheoutsideofawindoworthedirectionfacingtransmittingstationshelpsimprove
radiosignalreception.
Locationsoftransmittingstations
RadioSignalReceptionRangeIndicationP.93-95
Do not move the watch while it is receiving radio signals.
Toenhancethereceptionofradiosignals,donotmovethewatchordonotchangethe
orientationofthewatchwhileitisreceivingradiosignals.
Ifthebuttonorcrownisoperatedwhilethewatchisreceivinga
radiosignal,thereceptionwillbecancelled.
The place where the watch is put before going to bed
Placethewatchnexttoawindowfacinginthedirection
ofatransmittingstationbeforebedtimebecause
automaticreceptionisperformedlateatnight.Also,
pleasesearchforaplacetoeasilyreceiveradiosignals
whenattemptingmanualreception.
4
HowtoSettheTime(RadioSignalReception)
Antenna
97
HowtoSettheTime(RadioSignalReception)
4
If a reception was successful: The second hand points to Y
A radio signal has been received successfully. Use the watch without any adjustments.
Ifeitherthetimeordateisincorrect,evenwhensuccessfullyreceivingaradiosignal
“Misalignmentofthetimeandhandpositions”onP.132and“Misalignmentofthedate”onP.133in
Troubleshooting
If reception has failed: The second hand points to N.
Place the watch in a place where it can easily receive a radio signal, or change its direction.
Evenwithintheradiosignalreceptionrange,thiswatchmayfailtoreceivearadiosignaldepending
onthecondition(duetotheinuenceofweather,geographicalfeatures,buildings,ordirection).
Inthiscase,refertoEnvironmentsinwhichitisdi󰮐culttoreceivearadiosignalonP.99.
Thiswatchisunabletoreceiveradiosignalsoutsideareceptionrange
AboutreceptionconditionsonP.93
Make sure that the time zone is correctly selected before attempting radio signal reception.
IfthetimezoneissettoaregionotherthanJapan,China,ortheU.S.A,thesignalreception
functionwillnotwork.Checkthetimezonesetting
HowtoselectthetimezoneonP.86
Attempt to receive a radio signal in a di󰮏erent time period (In the case of manual reception).
Receivingenvironmentsdi󰮏eraccordingtotimeperiodsevenatthesameplace.
Duetoradiosignalcharacteristics,thewatchisabletoeasilyreceiveradiosignalsduringnighttimehours.
 Ifyouusethewatchinaplaceorregionoutsidetheradiosignalreceptionrangeorwhen
thewatchcannotsuccessfullyreceiveradiosignals,manuallysetthetimeanddate.
HowtomanuallysetthetimeP.122
HowtomanuallysetthedateP.124
99
HowtoSettheTime(RadioSignalReception)
4
・
Closetohomeelectrical
appliancessuchasTV’
s,refrigeratorsorair
conditioners
・
ClosetoOAdevises
suchasmobilephones,
personalcomputersor
faxmachines
・
Closetosteeldesksor
otherfurnituremadeof
metal
・
Inplacesgenerating
radiointerference,
suchasconstruction
sitesorplaceswith
heavytra󰮐c.
・
Closetooverhead
powerlines,TV
stations,traincables.
・
Insideabuilding,
betweentallbuildings,
underground.
・
Insideavehicle,train,or
airplane
Environments in which it is di󰮐cult to receive a radio signal
Avoid putting the watch
in such places when it
receives radio signals.
100
Thewatchmaydisplaythewrongtimeifitfailstoreceiveradiosignalsproperly
becauseofinterference.Thewatchmayalsofailtoreceiveradiosignalsproperly
dependingonthelocationorradiowavereceivingconditions.Inthiscase,movethe
watchtoanotherplacewhereitcanreceiveradiosignals.
Whenthewatchisoutofreceptionrange,itsaccuratequartzmovement
(loss/gain:±15secondspermonthonaverage)willcontinuetokeepthetime.
Thetimesignaltransmissionmaybestoppedduringmaintenanceofthefacilitiesofeach
transmittingstationorbecauseofalightningstrike.Insuchacase,seeeachstation’s
websiteforfurtherinformationorcontactSEIKOCUSTOMERSERVICECENTER.
Websitesoftransmittingstations(asofDecember2017)
Japan: NICT(JapanStandardTimeGroup)http://www.jjy.nict.go.jp/
China: NTSC http://www.ntsc.ac.cn
TheU.S.A:
 NIST 
https://www.nist.gov/pml/time-and-frequency-division/radio-stations/wwvb
4
HowtoSettheTime(RadioSignalReception)
CAUTIONS
102
How to charge the watch
Exposethedialtolighttochargethewatch.
About charging
Whenchargingthewatch,makesurethatthewatchisnotheatedtoahightemperature.(Theoperational
temperaturerangeisbetween-10ºCand+60ºC.)
Whenrstusingthewatchorstartingtousethewatchafterithasstoppedbecauseoftheenergy
depletion,su󰮐cientlychargethewatchreferringtothetableonthepageattheright.
Toensureoptimalperformanceofthe
watch,makesurethatthewatchis
keptsu󰮐cientlychargedatalltime.
Underthefollowingsituations,theenergyofthewatchis
likelytobedepleted,resultinginstoppageofthewatch.
・
Thewatchisconcealedunderasleeve.
・
Thewatchisusedorstoredunderconditions
whereitcannotbeexposedtolightforalongtime.
5
SolarChargingFunction
101
HowtoSettheTime(RadioSignalReception)
4
103
Theguresof“Timerequiredforchargingthewatchtostartmovingatone-secondintervals”are
estimationsoftimerequiredtochargethestoppedwatchbyexposingittolightuntilitmovesat
steadyone-secondintervals.Evenifthewatchispartiallychargedforashorterperiod,thewatch
willresumeone-second-intervalmovement.However,itmayshortlyreturntotwo-second-interval
movement.Usethechargingtimeinthiscolumnasaroughguideforsu󰮐cientchargingtime.
Thesecondhandmovementindicatestheremainingamountofenergy.“1.Checkingthechargingstatus”P.82
Therequiredchargingtimeslightlyvariesdependingonthemodelofthewatch.
Standard charging time
Foranapproximatetimerequiredtochargethewatch,refertothetablebelow.
Illumination
lx (LUX) Light source Condition
(Example)
Time required for fully
charging the watch
Time required for charging
the watch to start moving
at one- second intervals
Time required for
charging the watch
to run for one day
500
Incandescentlight
60W60cm - 5hours
700
Fluorescentlight
Generalo󰮐ces - 3hours
1,000
Fluorescentlight
30W70cm 120hours 2hours
3,000
Fluorescentlight
30W20cm 90hours 30hours 30minutes
5,000
Fluorescentlight
30W12cm 70hours 24hours 24minutes
10,000
Fluorescentlight
30W5cm 25hours 8hours 9minutes
10,000 Sunlight Cloudyday 25hours 8hours 9minutes
100,000 Sunlight
Sunnyday
(Underthedirectsunlight
onasummerday)
8hours 2hours 3minutes
5
SolarChargingFunction
104
Energy depletion forewarning function
Theenergydepletionforewarningfunctionisactivatedwhentheenergystoredinthe
watchrunslow.Insuchacase,thesecondhandmovesattwo-secondintervals.If
thewatchcontinuestobeinthestateoftwo-secondintervalmovement,thewatch
switchestove-secondintervalmovement,followedbyacompletelystoppedstate.
Iftheenergydepletionforewarningfunctionisactivated,chargethewatchsu󰮐ciently.
Howtochargethewatch・・・・・ P.102
Standardchargingtime・・・・・・・ P.103
Neitherthebuttonsnorthecrowncanbeoperatedwhilethesecondhandmovesattwo-secondorve-sec-
ondintervals(thisisnotamalfunction).
Whilethesecondhandmovesatve-secondintervals,thehourandminutehands,aswellasthedate,stop
operating.
Whilethesecondhandmovesatve-secondintervals,thewatchisunabletoreceiveradiosignalsautomati-
cally.Afterthewatchischargedsu󰮐cientlyandthesecondhandreturnstonormalone-secondinterval
movement,conductthemanualreceptionofradiosignalstosetthewatchtothecorrecttime.(Referto
AutomaticreceptionandmanualreceptiononP.92.)
About energy
5
SolarChargingFunction
106
Thecasebackshowsthecaliberand
performanceofyourwatch.
The watch requires good daily care
・
Donotwashthewatchwhenitscrownis
attheextendedposition.
・
Wipeawaymoisture,sweatordirtwitha
softcloth
・
Aftersoakingthewatchinseawater,be
suretowashthewatchincleanpure
waterandwipeitdrycarefully.
 Ifyourwatchisratedas“non-water
resistant”or“waterresistantfordaily
use,”donotwashthewatch.
PerformanceandtypeP.106.
WaterresistanceP.107.
Turn the crown from time to time
・
Inordertopreventcorrosionofthe
crown,turnthecrownfromtimetotime.
・
Thesamepracticeshouldbeappliedto
acrown.(Noneedtopulloutthescrew
locktypecrown.)
CrownP.81
ToPreservetheQualityofYourWatch
6
Daily care Performance and type
Thegureaboveisone
example.Performanceof
yourwatchisdi󰮏erent
fromtheabovesample.
Waterresistant
performance
RefertoP.107
Calibernumber
Thenumbertoidentify
thetypeofyourwatch
Magneticresistant
performance
RefertoP.108
105
Power save function
Thiswatchisequippedwithapowersavefunctionwhichcansuppressenergyconsump-
tionwhenitisleftwithoutreceivinganadequatelightsourceforacertainlengthoftime.
Therearetwotypesofpowersavemode.
Power Save 1 Power Save 2
Condition
Whenthewatchisexposedtoastatewithoutreceiving
anadequatelightsourcefor72hoursorlonger.
Whenthewatchisinaninsu󰮐cient
chargingstateforalongtime.
Situation
Howtohandle
thesituation
Whenthewatchisexposedtoalightsourceforoverve
seconds,orwhenabuttonispressed,itdisplaysthecurrent
timeagainafterthesecondhandisrapidlyadvanced.
Aftersu󰮐cientlychargingthebattery,
setthewatchforthecurrenttimeif
necessary.
PowerSave2
Whilethewatchisbeingcharged,thesecondhandmovesat“Five-secondIntervals.”
 Duringthe“Five-secondIntervalMovement,”neitherthebuttonsnorthecrowncanbeoperated.
Ifthe“PowerSave2”modeisprolonged,thestoredpoweramountdropsandtheinternalcurrenttimeinformationstoredwillbelost.
Whenthewatchreturnstoitsnormalmovementofone-secondintervalaftersu󰮐cientlychargingthebattery,
setthecurrenttimebyreceivingaradiosignal.(RefertoAutomaticreceptionandmanualreception
P.92)
Thesecondhandstopspointing
atthe15-secondposition,and
thehourandminutehands,as
wellasthedate,alsostop.
Thesecondhandstopspointing
atthe45-secondposition,and
thehourandminutehands,as
wellasthedate,alsostop.
Thewatchconducts
automaticradiosignal
receiving.
Thewatchdoesnot
conductautomaticradio
signalreceiving.
5
SolarChargingFunction
107
ToPreservetheQualityofYourWatch
6
Referthetablebelowforthedescriptionofeachdegreeofwaterresistant
performanceofyourwatchbeforeusing.
(Referto“P.106”)
Indicationon
thecaseback
Waterresistant
performance Conditionofuse
Noindication Non-waterresistance Avoiddropsofwaterorsweat
WATER
RESISTANT
Waterresistancefor
everydaylife
Thewatchwith-
standsaccidental
contactwithwater
ineverydaylife.
WARNING
WARNING
Not
suitablefor
swimming
WATER
RESISTANT
5BAR
Waterresistancefor
everydaylifeat5
barometricpressures
Thewatchissuitableforsportssuchas
swimming.
WATER
RESISTANT
10(20)BAR
Waterresistancefor
everydaylifeat10(20)
barometricpressures.
Thewatchissuitablefordivingnotusinganair
cylinder.
Water resistance
108
A󰮏ectedbynearbymagnetism,
awatchmaytemporarilygainorlosetimeorstopoperating.
Whenthehandpositionsdeviatetodisplayincorrecttimeasaresultofinuenceofmagnetism.this
watchautomaticallycorrectsthehandalignmentitself.(RefertoP.126)
Indicationonthecaseback Conditionofuse
Noindication Keepthewatchmorethan10cmawayfrom
magneticproducts.
Keepthewatchmorethan5cmawayfrom
magneticproducts.(JISlevel-1standard)
Keepthewatchmorethan1cmawayfrom
magneticproducts.(JISlevel-2standard)
Magnetic resistance
Ifthewatchbecomesmagnetizedanditsaccuracydeterioratestoanextentexceedingthespec-
iedrateundernormaluse,thewatchneedstobedemagnetized.Inthiscase,youwillbecharged
fordemagnetizationandaccuracyreadjustmentevenifithappenswithintheguaranteeperiod.
Thereasonwhywatchisa󰮏ectedbymagnetism
Thebuilt-inmotorisprovidedwithamagnet,whichmaybeinuencedbyastrongexternalmagneticeld.
ToPreservetheQualityofYourWatch
6
110
Thebandtouchestheskindirectlyandbecomesdirtywithsweatordust.
Therefore,lackofcaremayacceleratedeteriorationofthebandorcause
skinirritationorstainonthesleeveedge.Thewatchrequiresalotof
attentionforlongusage.
Metallic band
・
Moisture,sweatorsoilwillcauserustevenonastainlesssteelbandiftheyareleftfor
alongtime.
・
Lackofcaremaycauseayellowishorgoldstainonthelowersleeveedgeofshirts.
・
Wipeo󰮏moisture,sweatorsoilwithasoftclothassoonaspossible
・
Tocleanthesoilaroundthejointgapsoftheband,wipeitoutinwaterandthenbrush
ito󰮏withasofttoothbrush.
(Protectthewatchbodyfromwatersplashesbywrappingitupinplasticwrapetc.)
・
Becausesometitanbraceletsusepinsmadeofstainlesssteel,whichhasoutstanding
strength,rustmayforminthestainlesssteelparts.
・
Ifrustadvances,pinsmaypokeoutordropout,andthewatchcasemayfallo󰮏the
bracelet,ortheclaspmaynotopen.
・
Ifapinispokingout,personalinjurymayresult.Insuchacase,refrainfromusingthe
watchandrequestrepair.
Band
ToPreservetheQualityofYourWatch
6
109
ToPreservetheQualityofYourWatch
6
Examples of common magnetic products that may a󰮏ect watches
Smartphone,cellularphone,
tabletterminal(speaker)
Bag
(withmagnetbuckle)
AC-powered
shaver
Portableradio
(speaker)
Magnetic
cookingdevice
Magnetic
necklace
Magnetic
healtpillow
ACadapter
111
Leather band
・
Aleatherbandissusceptibletodiscolorationanddeteriorationfrommoisture,sweatanddirectsunlight.
・
Wipeo󰮏moistureandsweatassoonaspossiblebygentlyblottingthemupwithadrycloth.
・
Donotexposethewatchtodirectsunlightforalongtime.
・
Pleasetakecarewhenwearingawatchwithlight-coloredband,asdirtislikelytoshowup.
・
RefrainfromwearingaleatherbandwatchotherthanAquaFreebandswhilebathing,
swimming,andwhenworkingwithwaterevenifthewatchitselfiswater-resistant
enforcedfordailyuse(10-BARwaterresistant).
Polyurethane band
・
Apolyurethanebandissusceptibletodiscolorationfromlight,andmaybedeterioratedby
solventoratmospherichumidity.
・
Especiallyatranslucent,white,orpalecoloredbandeasilyadsorbsothercolors,resulting
incolorsmearsordiscoloration.
・
Washoutdirtinwaterandcleanito󰮏withadrycloth.
(Protectthewatchbodyfromwatersplashesbywrappingitupinplasticwrapetc.)
・
Whenthebandbecomeslessexible,havethebandreplacedwithanewone.Ifyou
continuetousethebandasitis,thebandmaydevelopcracksorbecomebrittleovertime.
Notesonthe
lengthoftheband
Notesonskin
irritationandallergy
Skinirritationcausedbyabandhasvariousreasonssuchasallergytometals
orleathers,orskinreactionsagainstfrictionondustorthebanditself.
Adjustthebandtoallowalittleclearancewithyourwristtoensure
properairow.Whenwearingthewatch,leaveenoughroomtoinsert
angerbetweenthebandandyourwrist.
ToPreservetheQualityofYourWatch
6
112
Thereare3typeofspecialclaspsasdescribedbelow;
Iftheclaspofthewatchyoupurchasedisoneofthem,
pleaserefertotheindications.
A B
C
Special clasps
A Type  P.113 B Type P.114
C Type  P.115
ToPreservetheQualityofYourWatch
6
114
B Type
B
How to wear or take o󰮏 the watch
1. Pressthebuttononbothsidesoftheap;
pullthebuckleup.Thebandwillautomati-
callycomeoutoftheloop.
Fixed loop
Moveable
loop
Push
button
Flap
Buckle
2. Placethetipofthebandintothemoveable
loopandxedloop,andfastentheclaspby
pressingtheframeofthebuckle.
How to adjust the length of the leather band
1.
Withpressingbuttonsonbothsidesofthe
ap,pulltheleatherbandoutofthemoveable
loopandxedloop.Thenopentheclasp.
Fixed loop
Moveable
loop
Push
button
Flap
Buckle
2. Pressthepushbuttonsagaintounfasten
theap.
ToPreservetheQualityofYourWatch
6
113
A Type
A
Whenfasteningtheclasp,insertthetipofthebandintothemovable
loopandxedloop,andthen,securelytightentheclasp.
ToPreservetheQualityofYourWatch
6
1. Liftuptheclasptoreleasethebuckle.
Moveable loop
Fixed loop Flap
Buckle
2. Opentheap.
3. Takethepinoutoftheadjustmenthole,
adjustthesizeofthestrapbyslidingit
backandforth,andthenputthepinback
intotheappropriateadjustmenthole.
Pin Adjustment hole
4. Closetheap.
Donotpushtheapintoohard.
115
ToPreservetheQualityofYourWatch
6
3. Pullthepinoutofaadjustmentholeofthe
band.Slidethebandtoadjustitslength
andndanappropriatehole.Placethepin
intothehole.
Pin Adjustment
hole
4. Fastentheap.
1. Pressthebuttononthebuckle,andliftto
opentheclasp.
Push button
2. Pullthepinsoutoftheadjustmentholeson
theband.Slidethebandtotheappropriate
length.Pushthepinsintothenewholeson
theband.Fastenthebuckle.
C Type
C
116
Overchargepreventionfunction
Whenthesecondarybatteryisfullycharged,theoverchargepreventionfunctionisautomaticallyactivated
toavoidfurthercharging.Thereisnoneedtoworryaboutdamagecausedbyoverchargingnomatterhow
muchthesecondarybatteryischargedinexcessofthe“timerequiredforfullychargingthewatch”.
Referto“Standardchargingtime”onP.103tocheckthetimerequiredforfullychargingthewatch.
Power source
Thebatteryusedinthiswatchisaspecialsecondarybattery,whichistotally
di󰮏erentfromordinarysilveroxidebatteries.
Unlikeotherdisposablebatteriessuchasdry-cellbatteriesorbuttoncells,thissecondarybat-
terycanbeusedoverandoveragainbyrepeatingthecyclesofdischargingandrecharging.
However,forvariousreasonssuchaslong-termuseorusageconditions,thecapacity
orrecharginge󰮐ciencyofthesecondarybatterymaygraduallydeteriorate.Wornor
contaminatedmechanicalpartsordegradedoilsmayalsoshortenrechargingcycles.
Ifthee󰮐ciencyofthesecondarybatterydecreases,havethewatchrepaired.
Remarksonreplacingthesecondarybattery
Do notremovethesecondarybatteryyourself.
Replacementofthesecondarybatteryrequiresprofessionalknowledgeandskill.Pleaseaskawatchretailerforrepair.
・
Whenreplacingthesecondarybattery,makesurethattheexclusivesecondarybatteryforthiswatchis
used.Installationofanordinarysilveroxidebatterycangenerateheatthatcancauseburstingorignition.
NOTICE
ToPreservetheQualityofYourWatch
6
118
Notes on guarantee and repair
・
ContacttheretailerthewatchwaspurchasedfromorSEIKOCUSTOMERSERVICECENTERforrepairoroverhaul.
・
Withintheguaranteeperiod,presentthecerticateofguaranteetoreceiverepairservices.
・
Guaranteecoverageisprovidedinthecerticateofguarantee.Readcarefullyandretainit.
・
Forrepairservicesaftertheguaranteeperiodhasexpired,ifthefunctionsofthewatchcan
berestoredbyrepairwork,wewillundertakerepairservicesuponrequestandpayment.
Replacement parts
・
SEIKOmakesitapolicytotypicallykeepastockofreplacementpartsforthiswatchfor7years.
Replacementpartsarethosewhichareessentialtomaintainingthefunctionalintegrityofthewatch.
・
Pleasekeepinmindthatiforiginalpartsarenotavailable,theymaybereplacedwith
substituteswhoseoutwardappearancemaydi󰮏erfromtheoriginals.
Inspection and adjustment by disassembly and cleaning (overhaul)
・
Periodicinspectionandadjustmentbydisassemblyandcleaning(overhaul)isrecommendedapproximatelyonceevery3to4years
inordertomaintainoptimalperformanceofthewatchforalongtime.Accordingtouseconditions,theoilretainingconditionofyour
watchmechanicalpartsmaydeteriorate,abrasionofthepartsduetocontaminationofoilmayadvanceordelaythetimesignicantly,
orthewatchitselfmaystop.Asthepartssuchasgasketmaydeteriorate,water-resistantperformancemaybeimpairedduetointru-
sionofperspirationandmoisture.Pleasecontacttheretailerfromwhomthewatchwaspurchasedforinspectionandadjustmentby
disassemblyandcleaning(overhaul).Forreplacementofparts,pleasespecify“SEIKOGENUINEPARTS.”Whenaskingforinspection
andadjustmentbydisassemblyandcleaning(overhaul),makesurethatthegasketandpushpinarealsoreplacedwithnewones.
・
Whenyourwatchisinspectedandadjustedbydisassemblyandcleaning(overhauled),
themovementofyourwatchmaybereplaced.
After-sale service
ToPreservetheQualityofYourWatch
6
117
ToPreservetheQualityofYourWatch
6
Notesonchargingthewatch
Whenchargingthewatch,donotplacethewatchincloseproximitytoanintenselightsourcesuchaslightingequipmentfor
photography,spotlightsorincandescentlights,asthewatchmaybeexcessivelyheatedresultingindamagetoitsinternalparts.
Whenchargingthewatchbyexposuretodirectsunlight,avoidplacesthateasilyreachhigh
temperatures,suchasacardashboard.
Alwayskeepthewatchtemperatureunder60℃.
Lumibriteisaluminouspaintthatiscompletelyharmlesstohumanbeingsandnatural
environment,containingnonoxiousmaterialssuchasradioactivesubstance.
Lumibriteisanewly-developedluminouspaintthatabsorbsthelightenergyofthe
sunlightandlightingapparatusinashorttimeandstoresittoemitlightinthedark.
Forexample,ifexposedtoalightofmorethan500luxforapproximately10minutes,
Lumibritecanemitlightfor3to5hours.
Pleasenote,however,that,asLumibriteemitsthelightitstores,theluminancelevelofthelightdecreases
graduallyovertime.Thedurationoftheemittedlightmayalsodi󰮏erslightlydependingonsuchfactorsasthe
brightnessoftheplacewherethewatchisexposedtolightandthedistancefromthelightsourcetothewatch.
TheabovecommentsareappliedtothewatchwithLumibrite.
Ingeneral,whencomingfromaplacethatisbrighttoaplacethatisdark,ittakeshumaneyessometime
toadapttothedarknessmakingitdi󰮐culttoseeobjectsinitially.(Darkadaptation)
※
LumiBriteisluminouspaintthatstoresandemitslight,whichisharmlesstohumanbeingsandthe
environment,containingnotoxicmaterialssuchasradioactivesubstances.
NOTICE
Lumibrite
119
How to conduct manual reception (Receiving a radio signal manually)
1. Put the watch down.
Placethewatchwhereitcan
easilyreceiveradiosignals.
Theantennaisembed-
dedatthe9o’clock
positionofthewatch.
Turningtheantenna
towardtheoutsideofa
windowhelpsimprove
radiosignalreception.
ToImproveradiosignalreceptionP.98
Environmentsinwhichitisdi󰮐cultto
receivearadiosignalP.99
Thiswatchisunabletoreceiveradio
signalsoutsideareceptionrange.
AboutreceptionconditionsP.93
2.
Press and hold Button A until the second hand
moves to the 0-second position (for three seconds).
Afterthesecondhandmovestothe0-secondposition
andstops,thewatchwillstarttoreceiveradiosignals.
Button A
2.
Press and
hold for 3
seconds.
IfthetimezoneissettoaregionotherthanJapan,China,
andtheU.S.A,thesecondhandwillnotmovetothe0-second
position.(Themanualreceptionfunctionwillnotwork.)Checkif
thetimezoneiscorrectlyset.
Checkthetimezonesetting.
HowtoselectthetimezoneP.86
Troubleshooting
7
Continued on the next page.
120
Troubleshooting
7
3.
Leave the watch untouched for several
minutes. (For twelve minutes at the longest)
Whenthesecondhandstartsmovinginone-
secondintervals,thereceptioniscompleted.
Reception takes some time.
(12 minutes at the longest)
Itdependsontheradiosignalconditions.
<Displaybeforecompletingthereception>
Thesecondhandindicatesthereceptionlevel.
(Updatedeveryminute)
ReceivingLevel
High:(H) Low:(L)
Display
Radiosignalcondition
Easytoreceive Hardtoreceive
Inconjunctionwiththesecondhandmovement,the
minutehandadvancesbyoneminute.
4.
When the second hand starts
moving in one-second intervals,
check if the signal reception
was successfully conducted.
Uponcompletionofthesignalreception,
checkifthereceptionwassuccessful.
AboutreceptionresultdisplayP.96
Duringmovementofthedate,neitherthe
buttonsnorthecrowncanbeoperated.
<Ifthereceptionhasfailed>
Thesecondhandindicatesthe
receptionresultbypointingtoN.
Receptionresult:N
Afterveseconds,thewatchreturns
totheTIMEdisplaymode.
Ifreceptionhasfailed:Thesecondhand
pointstoN.P.97
122
How to manually set the time
Whenthewatchisusedcontinuouslyinconditionsinwhichthewatchmaybeunable
toreceivearadiosignal,itcanbemanuallyadjusted.
AboutreceptionconditionsP.93
・
Whenusingthewatchagaininregionsinwhichthewatchisabletoreceivearadiosignal,
itisrecommendedtoperform“Manualreception.”
AutomaticreceptionandmanualreceptionP.92
・
Whenadjustingthetime,thedatewillbeaccordinglyadjusted.
Whenthewatchisunabletoreceivearadiosignal,itcanmovedependingonnormalquartzmovement
(accuracyofloss/gain:±15secondspermonth).
Whenthewatchreceivesaradiosignalaftermanualadjustmentofthetime,itdisplaysthereceivedtime.
Troubleshooting
7
121
Troubleshooting
7
When the watch is unable to receive radio signals
Whenthewatchisunabletoreceiveradiosignals,refertothefollowing
pagesforremedies.
When the watch cannot receive radio signals within the signal reception range.
At trouble Reception of a radio signal P.131
Iftheaboveremediesdonotsolvetheproblem,setthetimeanddatereferringtothe“How
tomanuallysetthetimeordate”sectionbelow.
HowtomanuallysetthetimeP.122
HowtomanuallysetthedateP.124
Forthesignalreceptionrange,refertoRadioAboutreceptionconditionsP.93.
To use the watch outside the reception range
Setthewatchtothetimezoneoftheplacewhereyouusethewatch.
HowtoselectthetimezoneP.86
Whenthewatchisunabletodisplaythecorrecttimeanddate,evenifthetimezoneis
selected,manuallysetthetimeanddate.
123
Troubleshooting
7
Unlockthecrownbeforeoperatingitandthen,
relockitaftercompletingtheoperation.
P.81
Whenthewatchentersthemanualtimesetting
mode,thereceptionresultswillbeindicatedas
“N,”sincethereceptionresultsdatawillbelost.
Thepointinwhichthedatechangesat0:00AM
(12:00PM).Adjustthetimetakingintoconsider-
ationthatitissetduringtheAMandPM.
1. Pull out the crown to the second
click.
Thesecondhandmovestopointtothe
0-secondpositionandthewatchenters
themanualtimesettingmode.
2. Press Button A to set the time.
Oneminute
Advance
Pressthebuttononceandthenreleaseit.
Continuous
Advance
Whenthebuttoniskeptpressedfortwo
secondsorlonger,thehandwillstartto
move.Pressthebuttonagaintostop.
Turningthecrownwillnotmovethehand.
3.
Push the crown back in
simultaneously with a time signal.
Operationhasbeencompleted.
Thewatchresumesitsnormalmovement.
Button A
2.
for clockwise
turn
012
3.
1.
124
Troubleshooting
7
1.
Pull out the crown to the rst click.
Thisinitiatesthemodeformanuallyadjust-
ingthedate.
How to manually set the date
Ifyouusethewatchoutsidetheradiosignalreceptionrangeorinconditionswherethewatch
cannotreceiveradiosignals,thedatewillnotbeautomaticallyadjusted.Insuchacase,especially
ontherstdayafteramonththathaslessthan31days,thewatchrequiresmanualdatesetting.
・
Thedatecanbeadjustedindependentlyofthetime.
・
Tousethewatchinaradiosignalreceivableconditionagain,conductautomaticsignal
receptiontosetthetime.
AutomaticreceptionandmanualreceptionP.92
Whenthewatchreceivesradiosignalsafterthedateismanuallyadjusted,itdisplaysthedatereceivedfromradiosignals.
Ifthedateremainsincorrectevenafterasuccessfulradiosignalreception,thepreliminarypositionofthe
datemaybemisaligned.
HowtocorrectthepreliminarypositionsP.127
※
Unlockthecrownbeforeoperatingitandthen,
relockitaftercompletingtheoperation.
→
P.81
012
1.
126
Preliminary position
Whenthewatchisunabletodisplaytheprecisetimeordate,evenifitsuccessfullyreceivesa
radiosignalwiththecorrecttimezonesetting,thepreliminarypositionmaybemisaligned.
Thepreliminarypositionmaybemisalignedduetothefollowingreasons.
・
Inthecaseofhavingastrongimpact:misalignmentofthetimeanddatemayoccurwhendroppingorhittingthewatch.
・
Inthecaseofamagneticinuence:misalignmentofthetimeanddatemayoccurwhen
bringingthewatchclosetoanobjectwhichgeneratesmagnetism.
Examplesofcommonmagneticproductsthatmaya󰮏ectwatchesP.109
Whencomparingthestateof“MisalignedPreliminaryHandPosition”tothatofaweightscale,itislike“ascale
whichisunabletodisplaythecorrectweightbecauseitsneedleisnotsettothezeropositionbeforeweighing.”
Automatic Hand Position Adjustment Function (Function to automatically
adjust the preliminary position of the hour and minute hands)
Thehour,minute,andsecondhandshavean“AutomaticHandPositionAdjustmentFunction,”
whichautomaticallycorrectsanincorrectpreliminaryposition.
AutomaticHandPositionAdjustmentFunctionactivatesonceaminuteforthesecondhandand
at12:00bothfortheAMandPMforthehourandminutehands.
Thisfunctionworkswhenthepreliminaryhandpositionismisalignedduetoexternalfactorssuchasastrongimpactormagnetic
inuence.Itdoesnotworktoadjustaccuracyofthewatchorslightdeviationswhichmayoccurduringthemanufacturingprocess.
Thepreliminarypositionofthehourandminutehandscanalsobemanuallyadjusted.

SettingthepreliminarypositionofthedateP.127
Setting the preliminary position of the date
Sincethepreliminarypositionofthedateisnotautomaticallyadjusted,itmustbeadjustedmanually.
SettingthepreliminarypositionofthedateP.127
Troubleshooting
7
125
Troubleshooting
7
2. Press Button A to set the date.
Toadvance
oneday
Pressthebuttononceandrelease.
Toadvance
rapidly
Keeppressingdownthebuttonforlongerthan
2seconds.Pressthebuttononceagaintostop.
Turningthecrownwillnotmovethehand.
Whilethedateismoving,thebuttoncannotbeoperated.
Thedatecanonlymoveforward.Itcannotmove
backward.
3. Push the crown back.
Theoperationisnowcompleted.
012
3.
Button A
2.
Press
127
How to correct the preliminary positions
Setting the preliminary position of the date,
hour and minute hands
Thepreliminarypositionofthedateisthe“1st.”
Thepreliminarypositionsofthehourandminute
handsare“0:00AM.”
Whenthepreliminarypositionsareincorrect,thecorrecttimeanddatecannot
bedisplayedevenifthewatchreceivesradiosignals.
Insuchacase,bycorrectingthepreliminarypositions,thelossorgainofthe
timeordatecanbecorrected.
Whenthenumericalnumberofthedateisnotlocatedatthecenterofthewindow,itcanbe
correctedbythesameproceduresasmentionedabove.
Tocorrectthepreliminarypositions,performtheoperationonthenextpage.
Troubleshooting
7
128
Setting the preliminary position of the date, hour and minute hands (continued)
Within 10 seconds after procedure 1. is completed and the date stops, start the operation of procedure 2.
Ifthewatchisleftuntouchedfor10secondsafterthedatestops,thewatchautomaticallyreturnstothe
TIMEdisplaymode.Ifthishappens,restarttheoperationfromprocedure1.
Troubleshooting
7
1.
Keep pressing down Button A and B (for 3
seconds) at the same time until the second
hand stops pointing to the 13-second position.
Thewatchentersthepreliminarypositionsettingmodefordate.
Thedatewillstarttomoveandstopatthepreliminaryposition.
First,pressButtonB,andsubsequentlypressButtonAwhileholdingdown
ButtonBsoastopressbothofthemsuccessfully.
Whilethedateismoving,thebuttoncannotbeoperated.
2.
Within 10 seconds after the date stops,
press Button B to set the date to “1.”
Makesurethatthenumericalnumber“1”is
locatedatthecenterofthedatewindow.
If“1”isalreadydisplayedinthedatewindow,moveontoprocedure3.
Toadvance
rapidly
Keeppressingdownthebuttonforlongerthan
2seconds.Pressthebuttononceagaintostop.
Tone-
tune
Whenthebuttonispressedintermittently,
thehandwillslightlyadvance.
Donotpullthecrownout.
PressButtonBwithyourngerorwithan
objectwithalongtaperedtip.
P.80
Button A
1.
Press for
3 seconds
Button B
1.
Press for 3 seconds
2.
Press within 10
seconds after the
date stops
130
Troubleshooting
7
Condition Solutions
Reference
pages
Hand
Movement
Thesecondhandmoves
attwo-secondintervals.
Theenergydepletionforewarningfunctionisactivated.(P.104)
Fullychargethewatchsothatthesecondhandmaymove
atone-secondintervals.
Becarefulnottoconcealthewatchunderasleeve,etc.,whilewearingit.
Whentakingo󰮏thewatch,placeitinasbrightalocationaspossible.
P.104
Thesecondhandmoves
atve-secondintervals.
Thestoppedsecondhand
pointingtothe15-second
positionstartedoperating.
Thepowersavefunctionhasbeenactivated.(P.105)
Waituntilthecurrenttimeisdisplayed.
Nooperationisneeded(thisisnotamalfunction.)
Thestoppedsecondhand
pointingtothe45-second
positionstartedoperating.
Thepowersavefunctionhasbeenactivated.(P.105)
1.Fullychargethewatchsothatthesecondhandmay
moveatone-secondintervals.
2.Afterthat,ifthewatchdisplaystheincorrecttime,
receivearadiowaveasneeded.
P.102
P.91
Thewatchhandsadvance
rapidlyunlessabuttonis
pressed.Aftertherapid
advancementiscompleted,
thewatchresumesits
normalmovement.
Thepowersavefunctionhasbeenactivated.(P.105)
Theautomatichandpositionadjustmentfunctionwas
activated.(P.126)
Nooperationisneeded(thisisnotamalfunction).
At trouble
129
Troubleshooting
7
3.
Keep pressing down Button A (for 2 seconds) until the
second hand stops pointing to the 0-second position.
Thewatchentersthepreliminaryposition
settingmodeforhourandminutehands.
Ifthehourandminutehandsarealreadyindicatingthe
correcttime,moveontoprocedure5.
4.
Press Button B once and release it.
Thehourandminutehandsstarttomoveandstoppointingat“0:00am.”
5.
After completing the operation, leave
the watch untouched for 10 seconds.
Thewatchautomaticallyexitsthepreliminarypositionsetting
mode,andthesecond,hourandminutehandsstartmoving.
WhenthewatchreturnstotheTIMEdisplaymode,checkifthetimeanddatearecorrect.
Ifthetimeanddatearenotcorrect,manuallysetthem.
Adjustingthetimeanddatebyreceivingaradiosignal
Howtoconductmanualreception→P.119
Whenthewatchisunabletoreceivearadiosignal
Howtomanuallysetthetime
P.122
Howtomanuallysetthedate
P.124
Button A
3.
Press for
2 seconds
Button B
4.
Press
once
131
Troubleshooting
7
Condition Solutions
Reference
pages
Reception
of a radio
signal
Whenthewatchis
unabletoreceivea
radiosignal
Thereceptionresults
havefailedandthe
secondhandpoints
toN(thewatchdoes
notreceivearadio
signal).
Donotmovethewatchwhileitisreceivingaradiosignal.
Becauseittakestimetoreceivearadiosignalsuccessfully,
leavethewatchuntouchedfor12minutesatthelongest.
P.98
P.119
Placethewatchwhereitisabletoeasilyreceivearadiosignal.
P.98
Transmittingstationsmayhavestoppedtransmittingradio
signalsforsomereason(Transmissionstop).
Checkthewebsiteofeachtransmittingstationforfurther
informationconcerningatransmissionstop.Attemptto
receivearadiosignalagainafterawhile.
P.100
Reselectthetimezoneabletoreceivetheradiosignal.
P.86
P.93
Charging
the solar
battery
Thestoppedwatch
wasexposedtoan
adequatelightfor
longerthan“the
timerequiredtofully
chargethewatch,”
however,itdoesnot
resumeitsnormal
one-secondinterval
movements.
Thetimerequiredforchargingthewatchdependsentirely
ontheamountofexposedlightthewatchreceives.
Referto“Standardchargingtime”tochargethewatch.
P.103
Thebuilt-inICofthewatchhasfallenintoanunstable
condition.
Referto“Incaseofanabnormalmovement”toresetthe
built-inIC.
P.134
132
Troubleshooting
7
Condition Solutions
Reference
pages
Misalignment
of the time
and hand
positions
Thewatchtemporarily
gainsorlosestime.
1.
Placethewatchwhereitisabletoreceivearadiosignalmoreeasily.
2.Conductmanualreceptionifnecessary.
P.98
P.119
1.
Incasethewatchhasbeenleftinaplacewithanextremelyhigh
orlowtemperatureforalongtime,Whenthewatchreturnstoa
normaltemperature,itwilldisplaytheprecisetimeasbefore.
2.
Ifthewatchstillgainsorlosesthetime,conductmanualreceptionifnecessary.
P.119
3.
Ifthewatchcannotresumenormalmovementevenafterconductingtheabove
mentionedprocedures,consulttheretailerfromwhomthewatchwaspurchased.
Thewatchdisplaysan
incorrecttimehourunit,even
thoughitdisplaystheprecise
timeofminutesandseconds
Makesurethatthewatchissettothetimezonethatcoversthe
placewhereyouusethewatch.
P.86
Thereceptionresultsare
successful,buttheprecise
timeisnotdisplayed.
1.
Nocrownorbuttonoperationisneeded,sincetheautomatichandposition
adjustmentfunctionwillbeactivatedtoalignthehandpositions.Automatic
HandPositionAlignmentFunctionactivatesonceaminuteforthesecond
handandat12:00bothfortheAMandPMfortheminuteandhourhands.
Itcanbemanuallyadjusted,whenyouhurryup.
P.126
P.122
P.134
Thesecondhand
positionisnotcorrectly
alignedin“thereception
resultsdisplay”or“the
receptionleveldisplay.”
2.Ifthewatchstillgainsorlosestime,referto“Incaseofan
abnormalmovement”toperformprocedures.
3.Ifthewatchcannotresumenormalmovementevenafter
conductingtheabovementionedprocedures,consultthe
retailerfromwhomthewatchwaspurchased.
134
Troubleshooting
7
In case of an abnormal movement
Inthecasethatthewatchmovesabnormallyorthatthewatchdoesnotmoveatone-secondintervalsevenafterfully
chargingthebattery,performtheproceduresfrom1. to3. andthensetthepreliminarypositionsandselectthetimezone.
■ How to reset the built-in IC
※
Unlockthecrownbeforeoperatingitandthen,
relockitaftercompletingtheoperation.
P.81
(NOTE)First,pressButtonB,andsubsequentlypress
ButtonAwhileholdingdownButtonBsoasto
pressbothofthemsuccessfully.
1.
Pull out the crown to the second click.
Thesecondhandstopsatthe0-secondposition.
2.
Keep pressing down Button A and B at the same
time for 3 seconds, and then release them.
Within5secondsafterreleasingthebuttons,thesecond
handmakesafullrotationandstopspointingtothe0-second
position.Thenthehourandminutehandswillstarttomove
andstoppointingto12o’clock0minutes.
(NOTE)
3.
When all the hands stop pointing to 12 oclock
0 minutes and 0 seconds, push the crown back.
Thesecondhandstartsmovingfrom12o’clock0minutesand0seconds.
Afterthebuilt-inICisreset,thewatchissettothetimezoneLON.
Aftercompletionofasystemreset,performthefollowingoperations.
Howtocorrectthepreliminarypositions 
P.127-129
Howtoselectthetimezone 
P.86-87
Howtoadjustthetime(forcedreceptionmethod)
 
P.119-120
Button A
2.
Press for
3 seconds
Button B
2.
Press for
3 seconds
012
3.
1.
133
Troubleshooting
7
Condition Solutions
Reference
pages
Misalignment
of the date
Thereceptionresults
aresuccessfulandthe
precisetimeisdisplayed,
butthedateisnot
correctlydisplayed.
Setthedatetothepreliminaryposition“1”(the1st).
P.127
Operation
Thecrownorbuttons
cannotbeoperated.
Su󰮐cientlychargethewatchuntilitstartsmovingatone-secondintervals.
Whenthedatehandismovingrightafterasettingiscarriedoutbyacrownor
buttonoperation,afterthedatestops,thecrownandbuttonscanbeoperated.
P.102
Yougetlostin
themiddleofthe
operation.
1.Ifthecrownispulledout,pushitbackin.
2.
Thewatchwillresumeitsnormalone-secondintervalmovementswithin9minutes.
3.Startthesettingprocedurefromthebeginning.
Others
Bluronthedialglasspersists.
Contacttheretailerfromwhomthewatchwaspurchased.
Forthesolutionoftroublesotherthantheabove,consulttheretailerfromwhomthewatchwaspurchased.
135
Specications
8
1. Basic feature ����������������� Basic watch with three hands (hour, minute and second hands), date display
2.
Frequency of crystal oscillator
��� 32,768 Hz (Hz = Hertz ... Cycles per second)
3. Loss/gain (monthly rate) ����� Loss / gain ±15 seconds on a monthly rate (Except the case when the watch is
used without an automatic time setting by receiving a radio signal and when it is
worn on the wrist within a normal temperature range between 5℃ and 35℃).
4.
Operational temperature range
��� Between −10℃ and +60℃
5. Driving systems �������������� Step motor (Hour and minute hands, second hand, and the date)
6. Power source ���������������� Secondary battery, 1 piece
7. Duration of operation ��������� Approximately six months (Fully charged, and the Power Save is not activated).
If Power Save is activated after it is fully charged, the watch continues to run
for approximately one and a half years at maximum.
8. Time setting by receiving
the JJY-LF radio signal
���� Automatic reception (before 2:00 AM, 3:00 AM and 4:00 AM)
Reception attempts depend on the radio signal receiving conditions.
After having received a radio signal, the watch will start to move depending on
the quartz movement until the next reception.
Manual reception is also available.
9. IC (Integrated Circuit) �������� Oscillator, frequency divider and driving circuit C-MOS-IC, 3 pieces
Thespecicationsaresubjecttochangewithoutpriornoticeforproductimprovement.
Specications
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4
  • Page 5 5
  • Page 6 6
  • Page 7 7
  • Page 8 8
  • Page 9 9
  • Page 10 10
  • Page 11 11
  • Page 12 12
  • Page 13 13
  • Page 14 14
  • Page 15 15
  • Page 16 16
  • Page 17 17

Seiko 7B27 Operating instructions

Category
Watches
Type
Operating instructions

Ask a question and I''ll find the answer in the document

Finding information in a document is now easier with AI