Seiko Caliber 9S85 User manual

BS9S85G-1107
本 社 〒105-8467東京都港区虎ノ門2-8-10
http://www.seiko-watch.co.jp
MECHANICAL
9S85
取扱説明書
INSTRUCTION

ThankyouforpurchasingourGrandSeikoproduct.
Formorethan100yearsoftimepiecemakingtraditionand
theadvancementofworld-classtechnology,
Seikohasdevoteditseffortstowatchmanufacturing
andinspections.Inordertomaintainsuperiorperformance
andproperandsafeuseoftheGrandSeiko,
pleasereadtheinstructionmanualcarefullybeforeuse.
Wethankyouinadvanceforlongtimeregularuseofourproduct.
Keepthismanualhandyforeasyreferenceasnecessary.
＊Length adjustment service of metallic band is available at the retailer from
whomthewatchwaspurchasedorSEIKOCUSTOMERSERVICECENTER
（listedattheback of thebooklet）.Theservice may alsobeavailableona
chargeable basis at other retailers; however, some retailers may not
undertaketheservice.
WARNING
Keepthewatchandaccessoriesoutofthereachofbabiesandchildren.
WARNING
Immediatelystopwearingthewatchinfollowingcases.
・Whenthewatchbodyorbandbecomesedgedbycorrosionetc.
・Whenthepinsprotrudefromtheband.
WARNING
※ ImmediatelyconsulttheretailerfromwhomthewatchwaspurchasedorSEIKOCUSTOMERSERVICECENTER（listedattheback）.
Toindicatetherisksofseriousconsequencessuchassevereinjuries
unlessthefollowingsafetyregulationsarestrictlyobserved.
Careshouldbetakentoavoiddangersforababyorachildtoswallowthe
accessories.
Ifababyorchildswallowstheaccessories,immediatelyconsultadoctor,as
itwilladverselyaffectthehealthofthebabyorchild.
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45
注意
Avoidfollowingplacestowearorkeepthewatch.
・Placeswherefugaciousagents（cosmeticssuchaspolishremover,
bugrepellent,thinneretc.）arediffusing
・ Placeswherethetemperaturebecomesbelow5°Corabove35°Cforalongtime
・Placesinhighhumidity
・Placesaffectedbystrongmagnetismorstaticelectricity
・Dustyplaces
・Placesaffectedbystrongvibrations
CAUTIONS
Othercautions
CAUTIONS
Ifyouobserveanyallergicsymptomsorskinfit
Stopwearingthewatchimmediatelyandconsultaspecialistsuchas
adermatologistoranallergist
CAUTIONS
・Donotdisassembleortamper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rushoritchesthatmaybe
causedwhentheytouchthewatch.
CAUTION Toindicatetherisksoflightinjuriesormaterialdamages
unlessthefollowingsafetyregulationsarestrictlyobserved.

HOWTOUSE
TOPRESERVETHEQUALITYOFYOURWATCH
Namesoftheparts
HOWTOUSE
48
49
68
70
72
74
78
80
82
83
After-saleservice
Guarantee
Dailycare
Waterresistance
Magneticresistance
Band
Troubleshooting
Specifications（Movement）
ＧRANDSEIKOSTANDARD
ＧrandSeikoStandard 59
CONTENTS
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Productfeatures
Thisisanautomatic mechanical watch mountedwithacaliber9S85exclusively for
GrandSeiko.
・Thebalancewheelfrequencyis36,000beatsperhour(10beatsasecond),whichis
higher than that of typical GRAND SEIKO mechanical watches: 28,800 beats per
hour (8 beats a second). As the balance wheel frequency increases, oscillations
becomemorestableandbetteraccuracycanbeobtained.
・The winding method is automatic, employing a structure so that it is sufficiently
wound by natural movement of the wrist while normally worn on the wrist.  In
addition,amanualwindingmechanismisequipped,whichisconvenientforwinding
themainspringwhenstarting,etc.
⇒For"HOWTOWINDTHEMAINSPRING,"refertopage51.
・Fromthestate ofthemainspring beingsufficientlywound, itcontinuouslyoperates
for55hoursormore.
・ForGrandSeikomechanicalwatches, only completedproductsareshipped which
havebeencarefullyassembled and adjusted by dedicated craftsmen, and passed
byexactingcertificationexaminationswhichcontinuefor 17 days according to the
"Grand Seiko Standard," Seiko's exclusive accuracy standard of mechanical
watches.
⇒Fordetailsofthe"GrandSeikoStandard,"refertopages60to66.
Namesoftheparts
Date
Hour
Hand
Second
Hand
Crown
Minute
Hand
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HOWTOUSEHOWTOUSE

Checkthetypeofthecrownofyourwatch
P.51HOWTOWIND
THEMAINSPRING
P.53HOWTOSET
THETIMEANDDATE
Thecrown
turns.
Thecrown
doesnotturn.
Turnthe
crown
clockwise. Unscrewthecrownby
turningitcounterclockwise.
Tosetthewatch
Unscrew.
Screwup.
Thecrownofyourwatchisthescrewlocktype
※
※ Thistypeofcrowncanbescrewedintothewatchbodytoavoidbeingpulledoutbymistake.
○Aftercompletingallsettingsofthewatch,screwthecrownupagainby
 turningitclockwisewhilepressingit.
○Ifthecrownturnsouttobetoostifftobescrewedup,returnthecrown
 counterclockwiseonceandthengiveanothertry.
○
Donotscrewthecrowninbyforceasitmaydamagethescrewpartofthecrown.
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51
Thiswatchisanautomaticwindingtype(withmanualwindingfunction).
・Themainspringcanbesufficientlywoundautomaticallybynaturalmovement
ofthearmwhilenormally wornonthewrist.Inaddition, itcanbewoundby
turningthecrown.
・A stopped watch can be started by arm movement when it is worn on the
wrist, however, before wearing the watch, wind the mainspring sufficiently
andadjustthetimeanddate.Whenturningthemainspring,turnthecrownat
the normal position clockwise (12 o'clock direction) slowly.  If you turn the
crowncounterclockwise(6o'clockdirection),itwillturnfree.Themainspring
is sufficiently wound when it is turned approximately 45 times.When the
mainspringisinthefull-windingstate,itisstructuredsothatthemainspring
slipsifitiswound.Therefore,itisnotnecessarytoworryaboutcuttingthe
mainspring,however,pleaserefrainfromexcessiveoperation.
・From the state of the mainspring being sufficiently wound, it continuously
operatesforapproximately55hoursormore.

※It is recommended that you wear the watch on your wrist more than 10 hours a day to keep the
mainspringwoundup.Ifthemainspringisnotwoundupsufficiently,thewatchmayloseorgaintime.If
youdonotwearthewatchonyourwrist,windthemainspringupsufficientlybyturningthecrownbyhand
everydayatafixedtime.
ぜんまいの巻き方
Howtowindthemainspring
Note
Formodelswithascrewlocktypecrown,makesuretoscrewthecrownupagainafterwindingthemainspring
Donotpullout
thecrown
（Inthecaseofascrew
locktypecrown,
releasethelock.）
Slowlyturnthecrown
clockwisetowind
themainspring.
・W henthe mainspringapproaches
full-winding, turning of the crown
is heavy more or less, however,
thisiscausedbyreactionforceof
the wound mainspring, which is
notdefective.
・Itisstructuredsothatthecrown
can be further turned in the full-
winding state.  Although it is not
necessaryto worry about cutting
the mainspring, refrain from
excessiveturning.
※Whenthe watchis usedfroma statein whichthe mainspringis unwoundtoastop,it doesnot move
immediatelyevenifthemainspringiswoundwiththewindingcrown.Thisisbecauseofthemechanical
watch'sfeaturethatthemainspring torque(force)isweakat thebeginningofmainspringwinding. The
secondhandstartsmovingwhenthemainspringiswoundtoreachacertaindegreeoftorquestrength,
whilethewatchcanbemadetomoveadvancebyshakingittorotatethebalancewheelforcibly.
Howtowindthemainspring
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Caution
Thiswatchisequippedwiththedatedisplayfunction.Thedatechangesonceevery24
hoursataround12o'clocka.m.Therefore,ifthea.m./p.m.isincorrectlyset,thedatewill
changearound12o'clockp.m.
Howtosetthetimeanddate
○Donotadjustthedatebetween10o'clockp.m.and1o'clocka.m.
Ifthedateisadjustedduringthisperiodoftime,thedatemaynot
changewhenthenextdaycomes,orthismaycausedamage.

First
click
①Pulloutthecrowntothefirstclick.(Ifthewatchisequippedwiththe
screwlocktypecrown,unscrewthecrownbeforepullingitout.)
②Thedatecanbeadjustedbyturningthecrownclockwise(12o'clock
direction).  First turn the crown clockwise until the previous day's
datefromthedesireddateappears.

(Ex.)Ifyouwanttosetthedateto''6,''
setthedateto''5.''
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55
③Pulloutthecrowntothesecondclickwhenthesecondhandisatthe
12 o'clock position. (The second hand stops.)  Turn the crown
clockwiseuntilthedesireddateappears.Whenthedatechanges,the
timeisa.m.Furtherturnthecrowntosetthecurrenttime.

④Pushthecrownbackintothenormal
position in accordance with a time
signal.Thewatchstartsoperating.

※Thetelephonetimesignalservice(Tel.117)
isconvenienttosetthedate.
Normal
position
Second
click
First
click
Note
Formodelswithascrewlocktypecrown,alwaysscrewthecrownupagainaftersettingthetimeanddate.
○Due to its wheel train mechanism, for setting the time of the
mechanical watch correctly, the hands should be set back once
slightlyandthensetforwardtothecorrecttime.
Caution
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57
Note
Formodelswithascrewlocktypecrown,alwaysscrewthecrownupagainaftersettingthedate.
Dateadjustmentattheendofthemonth
It is necessary to adjust the date after February (which has 28 days,
29daysinaleapyear)anda30daymonth.

【Ex.】On the first day of a 30 day
month, ''31'' is displayed.  Pull out
thecrowntothefirstclick.Turnthe
crown clockwise to set the date to
''1,'' and push the crown back in to
thenormalposition.
Firstclick

Caution
○Donotadjustthedatebetween10o'clockp.m.and1o'clocka.m.
Ifthedateisadjustedduringthisperiodoftime,thedatemaynot
changewhenthenextdaycomes,orthismaycausedamage.
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GRANDSEIKOSTANDARD
60
GrandSeikostandard
Duetothemovement（drivingbody）structure,normalusageaccuracyofamechanicalwatchvariesaccordingtodifferencesinenvironmental
conditionsofusesuchaswindingstateofthemainspringbymovementamountofthewristperday,temperatureenvironment,andposition=
orientationofawatch.
"Grand Seiko Standard" is a Seiko-exclusive accuracy standard for mechanical watches, which has been established to check superior
performanceofGrandSeikomechanicalwatchesirrespectiveofdifferencesinenvironmentalconditionsofuseinwhichawatchisused.
Fordetailsofthe"GrandSeikoStandard,"refertopages61to63.
ItisconditionedthatallofGrandSeikomechanicalwatchesaretobepassedbythe"GrandSeikoStandardExamination"accordingtothe
exactingstandard.Onlyproducts,inwhichthemovementsingleunitbeforeassemblyinacaseismeasuredforgain/loss（dailyrate）under
variousenvironmentswhichare artificiallycontrolledinthe manufacturingplantfor17days intotal,andthe measuredvaluesfallunderthe
standardrange,aregiventhetitleof"GrandSeiko."
Fornormalusageaccuracywhenthewatchisactuallyusedbyacustomer,-1to+8secondsperdayarespecifiedastargetvalues.
Toproperlyjudgetheaccuracyinthecaseofnormalusage,checkgain/lossbyusingforaweektotendays,notonlyforone
day,innormalusecondition.
Ifthemeanvalueperdayexceedstheabove-mentionedtargetrange,wewilladjustthewatch.（Adjustmentisprovidedfreeof
chargewithintwoyearsafterpurchase.Afterthetwo-yearperiod,adjustmentsarecharged.）Wewillrespondtothefollowing
casesatcostregardlessoftheperiodoftimeafterpurchase.
・ Disorderinaccuracyhasoccurredduetocustomer'scarelessnesssuchas,incorrectusagemethodormagnetizingthewatch.
・Disorderinaccuracyhasoccurredduetorepairbyanothercompany.
・ Disorderinaccuracyhasoccurredduetonaturaldisasterssuchasfire,floodorearthquake.
・Guaranteedconditionshavebeenaltered.
61
DescriptionofGrandSeikoStandard
Item Unit Standard
Meandailyrateindifferentpositions
Meanvariation
Maximumvariation
Differencebetweenflatandhangingposition
Greatestdifferencebetweenthemeandailyrateandany
Firstvariationofrateper1 ℃ （from38 ℃ to8 ℃ ）
Secondvariationofrateper1 ℃ （from38 ℃ to8 ℃ ）
Rate-resumption
Second/date
Second/date
Second/date
Second/date
Second/date
Second/date/℃
Second/date/℃
Second/date
Numberofpositionsininspection
Conditionoftemperatureininspection
Totaldaysofinspection
−3.0〜＋5.0
Lessthan1.8
Lessthan4.0
−6.0〜＋8.0
Lessthan8.0
−0.5〜＋0.5
−0.5〜＋0.5
−5.0〜＋5.0
6positions
8,23,38℃
17days

DescriptionofGrandSeikoStandardTerminology
Item
Position
in
inspection
Meaning
5orientationsare specified by the International StandardISO3158so as to carry out
various kinds of tests for time keeping. In addition thereto, in the GS examination, 12
o'clockUppositioninthestatewhereawatchtakenoffthewristisplaced,isadded,6
orientationsarespecified.（DialUp,DialDown,12o'clockUp,3o'clockUp,6o'clockUp,
and9o'clockUp）
Meandaily
rate
Meanvalueof a totalof 12 dailyratesmeasured in 6different positions, respectively,
for two days.  This is a target value indicating basic gain/loss per day of a watch,
however, it is required to comprehensively judge the actual accuracy performance in
considerationofotheritems.
Mean
variation
Meanvalueofatotalof6variationsofdailyratesbetweenthefirstdayandsecondday
whenmeasuredin6differentpositionsfortwodayseach.Itindicatesthedegreewhich
dailyaccuracystabilizesineachposition.
Maximum
variation
Maximumvalueofatotalof6variationsofdailyratesbetweenthefirstdayandsecond
day when measured in 6 different positions for two days each. It indicates the degree
whichaccuracyperdaychangesatmaximumaccordingtopositions.
62
63
Item
Difference
betweenflat
andhanging
position
Meaning
Indicatesgain/lossintwopositionsatwhichawatchismostfrequentlyusedindailylife.
Itisadifferencebetweenmeandailyratesfortwodayswhenawatchisplacedinthedial
Uppositionandmeandailyratesfortwodayswhenawatchisplacedinthe6o'clockUp
position.
Greatestdifference
betweenthemean
dailyrateandany
individualrate
Maximumdifferencevaluebetweendailyratesfortwelvedaysinthetestinitialstageand
meandailyrates. Itindicatesthedegreeatwhichthedailyratevariesaccordingtothe
mannerforplacingawatch.
Firstvariationof
rateper1℃
（between38℃
and8℃） 
Variation in daily rates per 1℃ between 38℃ and 8℃ in the same position（Dial Up
position）.  It indicates gain/loss in the temperature environment（taken-off state from
thewrist）whereawatchisused.
Secondvariation
ofrateper1℃
（between38℃
and23℃）
Variation of daily rates per 1℃ between 38℃ and 23℃ in the same position（Dial Up
position）.  It indicates gain/loss in the temperature environment（worn state of the
wrist）whereawatchisused.
Rate-resumption Valueobtained by subtractingmean daily ratesof initialtwodays fromdailyrate ofthe
lastexaminationday.Itindicatesthedegreeatwhichdailyratestabilizesafterusagefor
apredeterminedperiod.
GrandSeikostandardexaminationcertificate
・ GrandSeikoStandardExaminationCertificatecertifiesthevaluesofamovementsingle
unit before assembly in a case which were measured under an artificially controlled
environment in the manufacturing plant have passed the Grand Seiko Standard
Examination.Thecertificateisprintedwiththecalibernumber,movementserialnumber,
andcaseserialnumber.
・ Normalusageaccuracyofmechanicalwatchesvariesaccordingtorespectivecustomer
conditions of use （winding state of the mainspring by movement amount of the wrist
perday, temperatureenvironment,and position（orientationofawatch.）Accordingly,
the actual normal usage accuracy when it is used by a customer may differ from the
valueofeachitemspecifiedintheGrandSeikoStandard.
TheGrandSeikoStandardExaminationCertificatecannotbereissuedwhenithas
beenlost.Also,itcannotbereissuedafterrepairoradjustment.
CAUTION
64
65
Cautionsforaccuracyofmechanicalwatch
Mechanicalwatcheshaveamechanismthatismovedbypowergeneratedwhenthemainspringisunwound,
andsmall metal partsphysically worktogetherto controltheaccuracy. Fragilemetal parts ofa mechanical
watchareeasilyinfluencedbyexternalenvironmentsuchastemperature,gravity,andshock,andconditions
ofusesuchasnormal usagetime andwindingstateofthe mainspring,therefore,thisinfluenceappears as
gain/lossofthewatch.

① Accuracyofmechanicalwatchis"meandailyrate."
Accuracyof the quartzwatchis indicatedmonthlyor annuallysuchas amonthlyrate of±15seconds or
annual rate of ±10 seconds.  This indicates the degree of total difference in accuracy when the quartz
watch is continuously used for a month or a year. To the contrary, accuracy of the mechanical watch is
normallyindicatedasa"meandailyrate."Accuracyofthemechanicalwatchslightlyvarieseachdayasitis
influencedbyvariousconditionsofuse,anditisnormallyunstable.Thenitisrequiredtojudgewhetherthe
accuracyissatisfactoryornotbycheckingthemeanvaluesinthecaseofuseforaweektotendays,but
notfor only oneday. For normalusageaccuracy ofGrandSeiko mechanicalwatchmounted withacaliber
9S85, -1 to +8 seconds per day are specified as target values.  If the mean value exceeds the above-
mentionedtargetvalueinthenormalusageconditionwhenthewatchisusedforaweektotendays,wewill
adjustit.

＊
Adjustmentisprovidedfreeof charge within twoyearsafterpurchase.Afterthetwo-yearperiod, adjustments are charged.However,
pleasenotethatthepartsthatareage-deterioratedduetolongdurationofusemaynotbeadjustedtoyourdesiredaccuracy.

⇒Fordetails,refertopages60and68.

66
②Factorinfluencingaccuracy-1：Woundamountofthemainspring
In order to use the mechanical watch at better accuracies, it is required to supply a constant strong energy
wherever possible to respective parts. In the state where the mainspring is fully wound, accuracy is stable,
however,whenthemainspringisunwoundtoweakenenergytobesupplied,thepartscontrollingaccuracytends
to be externally influenced, and accuracy becomes unstable. In order to use a mechanical watch at a steady
accuracy,itisrecommendedtouseitinaconditionwherethemainspringissufficientlywound.

③Factorinfluencingaccuracy-2：Temperatureinfluence
Mechanical watch parts are metal which slightly elongate and contract by change in temperature, and this
influences accuracy.  Normally, under high temperatures, it tends to lose time, and under low temperatures, it
tendstogaintime.

④
Factorinfluencingaccuracy-3：Differencebyposition（orientationofawatch）
Partsrelatedtoaccuracy ofamechanicalwatcharealso influencedbytheearth'sgravity. Forexample,gainor
lossdifferswhenawatchishorizontallyplacedandwhenitisverticallyplacedinthe12o'clockupposition.When
thewatch is notworn onthewrist, accuracyerrorsthat occurwhilewearing canalsobe compensatedtosome
extentaccordingtotheposition.Trytoplaceitinvariouspositionstofindthepositionappropriatetoyourwatch.
TOPRESERVETHEQUALITYOFYOURWATCH
Notesonoverhaul
○
Periodicinspectionandadjustmentbydisassemblyandcleaning（overhaul）isrecommended
approximatelyonceevery2to3yearsinordertomaintainoptimalperformanceofthewatch
for a long time.The power transmission gear of the movement of this watch constantly
receives force. To ensure that this mechanism works properly all the time, washing
parts,changingoil,adjustingaccuracy,checkingfunctionsandreplacingconsumablepartson
a regular basis are important. The first overhaul after the purchase of your watch is
particularlyimportantforpreservinglong-timeuseofyourwatch.Accordingtouseconditions,
the oil retaining condition of your watch mechanical parts may deteriorate, abrasion of the
parts due to contamination of oil may advance or delay the time significantly, or the watch
itself may stop.  As the parts such as gasket may deteriorate, water-resistant performance
maybeimpairedduetointrusionofperspirationandmoisture.

After-saleservice
○
SEIKOmakesitapolicytotypicallykeepastockofreplacementpartsforthiswatchfor10
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differfromtheoriginals.

○
Dependingonconditionsofuse,accuracymaynotberecoveredafterthewatchhasbeenrepaired.
Replacementparts
68
69
○
Inspectionandadjustmentbydisassemblyandcleaning(overhaul)ofthemodel9S85willbe
performedbytheManufacturer.Whenyoutakethewatchtotheretailerfromwhomitwas
purchased,requestthatthewatchbeinspectedandoverhauledbytheManufacturer.

○Forperiodicinspectionandoverhaul,alsorequestreplacementofthegasketandpush
pinwithnewones.
RepairandGuarantee
○ Contact the retailer from whom the watch was purchased or SEIKO CUSTOMER
SERVICECENTERforrepairoroverhaul.
○
Ifyourwatchgetsoutoforderwiththecorrectwayofuseasdescribedinthisinstructionbookletwithintheguarantee
period,takeyourwatchtotheretailerfromwhomyourwatchwaspurchasedtogetherwiththecertificateofguarantee.

○
Guaranteecoverageisprovidedinthecertificateofguarantee.Readcarefullyandretainit. 
○
Foranyotherquestions,contactSEIKOCUSTOMERSERVICECENTER.
⇒Refertothecontactinformationlistedonthebackofthisbooklet.
○For appropriate repair, be sure to inform the retailer from whom the watch was
purchasedorSEIKOCUSTOMERSERVICECENTERthenonconformingstate（what
seconds are lost/gained per day, etc.,） and normal usage condition（normal usage
time,frequency,orientationatwhichthewatchisplacedwhiletakenoffthewrist,etc.）
Request

Guarantee
Withintheguaranteeperiod,weguaranteefreerepair/adjustmentserviceagainstany
defectsaccordingtothefollowingguaranteeregulations,providedthatthewatchwas
properlyusedasdirectedinthisinstructionbooklet.
Guaranteecoverage
Exceptionsfromguarantee
○Thewatchbody（movement,case）andmetallicband.
○Exchangeofleather,urethane,orfabricband
○
Troublesordamagetothecase,glass,orband,causedbyaccidentsorimproperusage
○Scratchesorgrimecausedbyuse
○
Troublesanddamagecausedbyactsofgod,naturaldisastersincludingfire,floodsorearthquakes.
○Textincertificatehasbeenaltered.
○Nocertificateispresented.
Infollowingcases,repair/adjustmentserviceswillbeprovidedatcost
evenwithintheguaranteeperiodorunderguaranteecoverage.
70
71
Proceduretoclaimfreerepairservices
Others
○
Foranydefectsunderguarantee,submitthewatchtogetherwiththeattachedcertificateof
guaranteetotheretailerfromwhomthewatchwaspurchased.
○
Inthecasewhereyoucannotaccepttheguaranteefromtheretailerfromwhomthewatchwaspurchaseddueto
gift-givingorrelocation,etc.,askSEIKOCUSTOMERSERVICECENTERbyattachingthecertificatewithoutfail.
○
Forthewatchcase,dialplate,hands,glass,bandetc.,somealternativepartsmaybeusedfor
repairifnecessary.Refertopage64ofthisbookletforretentionperiodoftheparts.
○
Forlengthadjustmentserviceofmetallicband,asktheretailerfromwhomthewatchwaspurchasedorSEIKOCUSTOMER 
SERVICECENTER.Otherretailermayundertaketheserviceonachargeablebasisormaynotundertaketheservice.
○
Freerepairservicesareguaranteedonlyundertheperiodandconditionsspecifiedinthecertificateof
guarantee.Itdosenotaffectspecificlegalrightsofaconsumer.
Dailycare
Thewatchrequiresgooddailycare
○Wipeoutmoisture,sweatordirtwithasoftcloth
○
Tocleanuptheclearances（aroundthemetallicband,crownorbackcase）,softtoothbrushisconvenient.
○
Aftersoakingthewatchinseawater,besuretowashthewatchinimpoundedrealwater
andwipeitdrycarefully.Donotpourrunningwaterdirectlyfromfaucetontothewatch.
Placewaterinavessel,etc.,towashthewatch.
○Inordertopreventcorrosionofthecrown,turnthecrownfromtimetotime.
○Thesamepracticeshouldbeappliedtoascrewlocktypecrown.
 （Noneedtopulloutthecrown.）
⇒Referto''Checkthetypeofthecrownofyourwatch''onpage50.
Turnthecrownfromtimetotime
72
73
Thecasebackshowsthecaliberandperformanceofyourwatch
※Theabovefiguresareexamples.Bothofthemmaybedifferentfromthefigureonthecasebackofyourwatch.
8
5
8
5
Waterresistant
performance
Referto"Water
resistance".P74
CaliberNumber
Thenumbertoidentify
thetypeofyourwatch
<Regularcaseback> <See-throughcaseback>

Waterresistance
Referthetablebelowforthedescriptionofeachdegreeof
waterresistantperformanceofyourwatchbeforeusing.
（Refertopage73forcheckingthecaseback.）
Indicationonthecaseback Waterresistantperformance
WATER RESISTANT Waterresistanceforeverydaylife
WATER RESISTANT 10BAR
Waterresistanceforeverydaylifeat10
barometricpressures
WATER RESISTANT 20BAR
Waterresistanceforeverydaylifeat20
barometricpressures.
74
75
ConditionofUse
WARNING
Notsuitableforswimming
Thewatchwithstandsaccidental
contactwithwaterineverydaylife.
Thewatchissuitablefordivingnotusinganaircylinder.
Thewatchissuitablefordivingnotusinganaircylinder.
WARNING
CAUTION
Donotusethewatchinscubadivingor
saturationdiving.
Donotturnorpulloutthecrownwhenthewatchiswet.
Watermaygetinsideofthewatch.
The various tightened inspections under simulated harsh environment, which
areusuallyrequiredforwatchesdesignedforscubadivingorsaturationdiving,
hasnotbeenconductedonthewater-resistantwatchwiththeBAR（barometric
pressure）display.Fordiving,usespecialwatchesfordiving.
※ 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back）.
76
77
CAUTION
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.
Donotleavemoisture,sweatanddirtonthewatchforalongtime.
Beawareofariskthatawaterresistantwatchmaylessenitswaterresistant
performancebecauseofthedeteriorationoftheadhesiveontheglassor
gasket,ortherustofstainlesssteel.
Donotwearthewatchwhiletakingabathorasauna.
Steam,soaporsomecomponentsofhotspringmayacceleratethe
deteriorationofwaterresistantperformanceofthewatch.