Foraprofessionaldivingwatch,itiscritical(andcouldevenbethedifferencebetweenlife
anddeath)thatthetimeisvisibleinanyandallconditions,beitnightdiving,deepdiving,
divinginpoorvisibilityorwreckdiving.TheLuminoxLightTechnology(LLT)ensureseasyand
immediate readability, and is always visible, constantly glowing for up to 25 years. The tiny
micro gas light glass tubes that guarantee constant visibility glow blue on the Deep Dive
series, as blue is the last color that the eyes register as one goes deeper and deeper under
water.Inaddition,theDeepDivefeaturesdifferent(contrasting)colorofLLTsatthe
12O’clockpositiononthedial,aswellasontherotatingbezel,andsincetheminutehandis
particularlyimportanttodivers,itisequippedwithadouble-LLTforeasierreading,evenin
completedarkness.
Why 500 Meters Water Resistance?
Manycompaniesmakewatcheswith200meterswaterresistance,but500meters /50 bar is
much more challenging and as a result separates the Luminox Deep Dive from more common
200metermodels.Thesapphirecrystalmustbemorethantwiceasthickasona200meter
watch(3.00mm),aswellasthecaseback(3.00mm).Steeldeformsat50barpressure,sothe
overall case construction has to be much more robust and rugged.
How was the Deep Dive tested under Norm ISO 6425?
TheInternationalStandardOrganizationISOspecifiescertainrequirementsandtest
procedures for dive watches and especially for dive watches made specifically for deep
diving.SpecialtestsaredoneunderNormISO6425thatregular,non-divecertifiedwatches
donothavetoundergo.Eachwatchmustbesubmergedinwater,at62.5bar(equivalent
to a pressure at 625 meters depth, which is 25% more then the stated 50 bar on the watch,
forsecurityreasons)fortwohoursandthenforonehourat0.3bar,beforeandafterwhich
thewatchistestedforcondensation.Theentirewaterresistanttestingproceduretakes3.5
hours for just 24 watches, demonstrating the intensity of these tests.
InadditiontoabovestrictwaterresistanttestsandasperthestrictrequirementsofISO6425,
a random selection of Deep Dive watches have to undergo further tests which can be tested
onlyinaspecializedlaboratory,suchas:
• Strap/bandstrength.Thisistestedbyapplyingaforceof200Ntoeachspringbar(or
attachingpoint)inoppositedirectionswithnodamagetothewatchatattachmentpoints.
• Thepresenceofaunidirectionalbezelwithminutemarkingsminimallyat1minute
intervals,andapre-selectmarkertomarkaspecificminutemarking.
• Thepresenceofanindicationthatthewatchisrunningintotaldarkness.Thisisusually
indicated by a running second hand with a luminous tip or tail.