Seiko 4F56 - Battery Change

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Batterychange
The miniature battery which powers your watch should last approximately 5
years (Cal. 4F56) / 10 years (Cal. 8F56). However, because the battery is
inserted at the factory to check the function and performance of the watch,
itsactuallifeoncein yourpossessionmaybeless thanthespecifiedperiod.
Whenthebatteryexpires,besuretoreplaceitassoonaspossibletoprevent
anymalfunction.Forbatteryreplacement,werecommendthatyoucontactan
AUTHORIZEDSEIKODEALERandrequestSEIKOSB-T18(Cal.4F56)/SEIKO
SB-T19(Cal.8F56)battery.
＊Ifthewatchisleftwiththecrownatthefirstorsecondclick,ifthecalendarcheckingfunctionis
used frequently, and/or if the watch is left in temperatures outside the normal temperature
range(5｡C˜35｡Cor41｡F˜95｡F)foralongtime,thebatterylifemaybelessthanthe
specifiedperiod.
Batterylifeindicator
・When the second hand starts moving at two-second intervals instead of
thenormalone-secondinterval,replacethebatterywithanewoneassoon
aspossible.Otherwise,thewatchwillstopoperatingintwoweeks.
＊Thetimeaccuracyisnotaffectedevenifthesecondhandismovingattwo-secondintervals.
＊While the second hand is moving at two-second intervals, the date will not change and the
watchwillnotshowthecalendarevenifthecrownispulledouttothefirstclick.
＊ Ifthewatchisleftinverylowtemperatures,thesecondhandmaytemporarilystartmovingattwo-second
intervals and the date does not change to the next. When the watch returns to normal temperature,
however,thisconditionwillbecorrectedandthecorrectdatewillbedisplayedonthenextday.

Ifthesecondhandstillmovesattwo-secondintervalsandthedatedoesnotchangeproperly,
replacethebatterywithanewone.
・ Checking and adjustment of the calendar after battery change The calendar
function is not affected by battery changes.  However, after the battery is
replacedwithanewone,besuretocheckthatthecalendariscorrect.(See"How
tocheckthecalendar")If thewatchdoesnotindicate theleapyear,monthand
datecorrectly,havethewatchadjustedbyanAUTHORIZEDSEIKODEALER.

・
Batteryreplacementischargedevenifitrunsdownwithintheguaranteeperiod. 
・
Once the case back is opened for battery replacement or other purposes, the
originalwaterresistantqualitydesignedforthewatchmaydeterioratewhenitis
closed. When you have the battery replaced with a new one, also request the
waterresistancetestpertaining tothewater resistantqualityofyour watch.If
your watch has 10-bar or higher water resistant quality, be sure to have such
testperformedonthewatcheverytimethebatteryisreplaced.Pleasenotethat
ittakes several daysto checkthewater resistantquality of yourwatch. When
requestingthechecking,therefore,pleasechecktheperiodrequiredforit.
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