Claude Bernard 84 - Watch Features and Materials; Water Resistance Guidelines

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VARIOUSINFORMATION
Mechanicalwatches
ThemechanicalClaudeBernardwatchwithanautomaticmovementdoes not needtobewoundby
hand.Themotionofyourwristmakestherotor(oscillatingweightormass)turn,therebywindingup
themainspringofthewatchmovement.Theeverydayactivityoflifeissufficientin
itselftowindup
anautomaticClaudeBernardwatchanditwillruncontinually,evenifitisremovedatnight.
However,ifnotwornforapproximately40hours,itwillstop.Tomakethewatchworkagain,turn
thecrownclockwiseabout20times.Nowsetthetimeand
ifpossiblethedate,etc.
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Mechanicalwatchesaccuracy
Dependingonthemovement,thedailytoleranceofamechanicalwatchcanbeof30seconds.Ifyou
noticeabiggertolerancerate,youcanhaveyourwatchadjustedataservicecenterinyourcountry,
freeofchargewithintheguarantee
period.

Tachymeterscale
SomeClaudeBernardChronographwatcheshaveatachymeterscale.Withthisscaleitispossibleto
measurethespeed.Thedistanceis1km.Tomeasuretheelapsedtimepressthestart/stopbutton
whenthevehicle(power‐boat)passesthestartingandthefinalpointortarget.
Thefigureshownby
thehandonthetachymeterscaleindicatestheaveragespeedinkilometers.Ifforinstanceacar
coversa1kmdistancein30seconds,youcanconsiderittoanaveragespeedof120kmperhour.
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Waterresistance
AllClaudeBernardtimepiecesarewater‐resistant
from30to220meters.Checkthedetailsonthe
backofyourClaudeBernardtimepieceandreadthefollowinginstructioncarefully.

Waterresistantto30meters(100feet/ 3ATM).Willwithstandrainorsplashesofwaterand
accidentalimmersion,butshouldnotbewornwhenshowering,swimmingor
diving.
Waterresistantto50meters(165feet/ 5ATM).Suitableforshoweringorswimminginshallow
waters.
Waterresistantto100meters(330feet/10ATM).Suitableforswimmingorsnorkeling.
Waterresistantto220meters(660feet/22ATM).Suitableforswimmingorsnorkeling.
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The
waterresistanceofyourtimepiececannotbeguaranteedindefinitely,consideringthatjoints
mayage,crownsorpushersmaysustainknocksandclimateortemperaturemayvary.Wetherefore
recommendthatyouhavethewaterresistanceofyourtimepiec echeckedevery2yearsor
wheneverthetimepiececaseisopened.

Leather
straps
OriginalClaudeBernardleatherstrapsareclearlymarkedonthebuckleandonthereverseside.
ClaudeBernardusesalargevarietyofcalfskinleatherstrapswithimprintedpatternsofdifferent
animals.Leatherstrapsshouldnotbeusedbyindividualswithstrongperspirationorbythosewho
stayfor
longperiodsinahumidclimate.LeatherstrapsarenotcoveredbytheinternationalClaude
Bernardwarranty.
Screw‐downcrown
Screwdownthecrowncarefullytopreventwaterfrompenetratingthemechan ism.
PVD(PhysicalVapourDeposition)
themoderntechnologiesandintendedforfieldsofapplicationsuchastheaeronautics,the
automobile,
thesurgery,theelectronics.
Stainlesssteel316L
ThestainlesssteelusedforClaudeBernardcasesandbraceletsappearsamongthebestalloysatthe
moment(316L.Itisobtainedbyaspecialcastironwhichguarantees anextremerobustnessand
excellentantimagneticproperties.Itslowcontentincarbonmakesit
particularlyresistanttothe
corrosion.
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