Casio QW-5623 is a multifunctional watch with a solar-powered battery, Bluetooth connectivity, auto time correction, and various features for diving, tide tracking, alarms, and world time. It boasts a full-auto calendar, stopwatch, countdown timer, and backlight, as well as a tide graph function with tide level and high tide time selection. Additionally, the diving function enables dive time measurement up to 2 hours and surface time display up to 24 hours, with log memory for dive records.
Casio QW-5623 is a multifunctional watch with a solar-powered battery, Bluetooth connectivity, auto time correction, and various features for diving, tide tracking, alarms, and world time. It boasts a full-auto calendar, stopwatch, countdown timer, and backlight, as well as a tide graph function with tide level and high tide time selection. Additionally, the diving function enables dive time measurement up to 2 hours and surface time display up to 24 hours, with log memory for dive records.
User’s Guide 5623
E-7
Selecting a Mode
Each press of C cycles between modes as shown below.
xHold down C for at least one second to enter the Calendar Mode.
xHold down C for at least two seconds to enter the Diving Mode.
* Indicated when a port is specified
with Mobile Link.
C
C
C
Tide Graph Mode*
C
Stopwatch ModeCalendar Mode
Timer ModeAlarm Mode
C
E-6
Day of the week:
SU, MO, TU, WE, TH, FR, SA
Summer time: DST
Standard time: STD
Auto summer time: AT
Tide conditions
Mode: ST (Stopwatch), TR (Timer),
AL (Alarm)
Dive Mode
E-5
General Guide
30
24-hour hand: Current timeAlarm status: ON, OFF
• Auto adjust:
Enabled (Y)/Disabled (N)
• Auto adjust:
Successful (Y)/Failed (N)
Dual Time dial
Bluetooth connection: C*
Time signal reception in
progress
Hour and minute hands: Current time
Click 1
Crown
Click 2
* Hold down D for at least 2.5 seconds to establish a Bluetooth connection with a phone.
E-4
Using the Watch
Charging
Remove the watch from your wrist and place it in a brightly lit area.
x The watch may become hot when exposed to light for charging. Take care to avoid burn injury.
x Avoid charging in locations where it is very hot.
Power Saving
x Leaving the watch in a dark location for about one hour between the hours of 9p.m. and 6a.m. will
cause the second hand to stop at 12o’clock.
x Leaving the watch in a dark location for about one week will cause all hands to stop.
Battery Alerts
x Low Battery
Second hand jumps every two seconds (Low Battery Alert).
x Dead Battery
All hands stopped.
E-3
Contents
Using the Watch ................................................................................................................................. E-4
Charging ..................................................................................................................................... E-4
General Guide.............................................................................................................................. E-5
Selecting a Mode ......................................................................................................................... E-7
Setting the Time .......................................................................................................................... E-8
Changing the Dual Time, Alarm Time, or Timer Time Setting........................................................ E-10
Specifications ................................................................................................................................... E-11
Operating Precautions ...................................................................................................................... E-14
User Maintenance ............................................................................................................................. E-20
E-2
This product has a Mobile Link function that lets it communicate with a Bluetooth® capable phone to
perform automatic time adjustment and other operations.
x This product complies with or has received approval under radio laws in various countries and
geographic areas. Use of this product in an area where it does not conform to or where it has not
been approved under applicable radio laws may be punishable under local laws. For details, visit
https://world.casio.com/ce/BLE/.
x Use of this product inside of an aircraft is restricted by the aviation laws of each country. Be sure to
obey instructions provided by flight personnel concerning use of devices such as this product.
E-1
ENGLISH
Congratulations upon your selection of this CASIO watch.
Visit the website below for the operation manual
(Operation Guide) of this watch.
https://world.casio.com/manual/wat/
To ensure that this watch provides you with the
years of service for which it is designed, carefully
read and follow the instructions in this manual,
especially the information under “Operating
Precautions” and “User Maintenance”.
Be sure to keep all user documentation handy
for future reference.
The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and
any use of such marks by CASIO COMPUTER CO., LTD. is under license.
MA2005-EB © 2020 CASIO COMPUTER CO., LTD.
User’s Guide 5623
E-13
Battery Operating Time:
Approximately 5 months
Conditions
Not exposed to light under the conditions below.
xBluetooth connection time: 10 hours/day
xAlarm: Once (10 seconds)/day
xIllumination: Once (3 seconds)/day
xHand sleep: 6 hours/day
xDiving: 3 dives/month
– Dive time measurement: 45 minutes/dive
– Surface time measurement: 15 minutes/dive
– Illumination: 6 seconds (3 seconds × 2)/dive
Note that battery operating time may be reduced by illumination conditions, and by dive time and
Bluetooth connection duration.
Specifications are subject to change without notice.
E-12 B
Diving Function:
Dive time measurement: Up to 2 hours (1-second units)
Surface time display: Up to 24 hours
Log memory: 30 records (dive start and end dates and times, or surface start and end dates and times)
Mobile Link Functions:
Auto Time Correction
Phone finder
Watch operation sounds the alert sound of the mobile phone.
World Time
Current time for approximately 300 cities selected for the watch
Home Time/World Time swapping
Auto summer time switching
Automatic switching between standard time and summer time
Tide Graph (6 levels)
Information on approximately 3,300 global locations
Timer Setting
Alarm Setting
Hand position correction
Data Communication Specifications
Bluetooth®
Frequency Band: 2400MHz-2480MHz
Maximum Transmission: 0 dBm (1 mW)
Communication range: 2 meters max. (depends on environment)
Other: Power Saving, High-brightness LED light, Auto Correction of Hand Home Positions, Hand Shift
Power Supply: Solar panel and 1 rechargeable battery
E-11
Specifications
Accuracy at Normal Temperature: ±15 seconds a month
Timekeeping: Hour, minute (hands move at 5-second intervals), second; date, day of the week
Calendar system: Full-auto calendar from 2000 to 2099
Others: Dual time (hour, minute, 24-hour timekeeping, 27 time zones, auto summer time setting,
Home Time/Dual Time swapping)
Signal Receive Function:
Auto receive, manual receive
Auto transmitter selection (for JJY, MSF/DCF77)
Receivable call signs: JJY (40kHz/60kHz), BPC (68.5kHz), WWVB (60kHz), MSF (60kHz),
DCF77 (77.5kHz)
Tide Graph Function: Tide level/high tide time selection
Stopwatch:
Measuring unit: 1 second
Measuring capacity: 23:59'59" (24 hours)
Alarm:
Setting units: Hour, minute
Beeper: 10 seconds
Countdown Timer:
Countdown unit: 1 second
Countdown range: 24 hours
Setting unit: 1 minute
Time up: 10-second beeper
E-10
Changing the Dual Time, Alarm Time, or Timer Time Setting
Dual Time dial,
a.m./p.m. hand
1. Use C to navigate to the mode whose time setting you want to change.
2. Rotate the crown towards you to loosen it.
3. Pull the crown out to the first click.
4. Rotate the crown to move the hands to the time you want to set.
5. After the setting is the way you want, push the crown back in and then
screw it securely into place.
E-9
9. Press C.
x This enables the year 1’s digit setting.
Year 1’s Digit Setting
0
6
3
2
4
1
5
9
8
7
10.
Rotate the crown to change the year 1’s digit setting.
11.
Press C.
x This enables the month setting.
Month Setting
Month Day
12
6
3
2
4
1
5
9
10
8
11
7
12.
Rotate the crown to change the month setting.
13.
Press C.
x This enables the day setting.
14.
Rotate the crown to change the day setting.
15.
After the settings are the way you want, push the crown back in and
then screw it securely into place.
E-8
Setting the Time
1. Rotate the crown towards you to loosen it.
2. Pull the crown out to the second click.
3. Hold down C for at least one second.
x This enables setting of the hour and minute.
4. Rotate the crown to change the current minute setting.
5. Press C.
x This enables setting of the hour.
6. Rotate the crown to change the current hour setting.
x The 24-hour hand indicates whether a time setting is a.m. (A) or
p.m. (P).
7. Press C.
x This enables the year 10’s digit setting.
8. Rotate the crown to change the year 10’s digit setting.
Year 10’s Digit Setting
00
60
30
20
40
10
50
90
80
70
-
1
-
2
Casio QW-5623 is a multifunctional watch with a solar-powered battery, Bluetooth connectivity, auto time correction, and various features for diving, tide tracking, alarms, and world time. It boasts a full-auto calendar, stopwatch, countdown timer, and backlight, as well as a tide graph function with tide level and high tide time selection. Additionally, the diving function enables dive time measurement up to 2 hours and surface time display up to 24 hours, with log memory for dive records.
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