Seiko T-4 User manual

T- 4
S802 ソーラーデジタルウオッチ
※Lengthadjustmentserviceformetallicbandsisavailableatthe
retailerfromwhomthewatchwaspurchased.Ifyoucannothave
yourwatchrepairedbytheretailer from whom the watch was
purchasedbecauseyoureceivedthewatchasagiftoryoumoved
toadistantplace,pleasecontactSEIKOCUSTOMERSERVICE
CENTER.
Theservicemayalsobeavailableonachargeablebasisatother
retailers,however,someretailersmaynotundertaketheservice.
※Ifyourwatchhasaprotectivefilmforpreventingscratches,make
suretopeelitoffbeforeusingthewatch. If the watch is used
withthefilmonit,dirt,sweat,dust,ormoisturemaybeattached
tothefilmandmaycauserust.
ThankyouverymuchforchoosingaSEIKOwatch.
ForproperandsafeuseofyourSEIKOwatch,
pleasereadcarefullytheinstructionsinthis
bookletbeforeusing"it."
Keepthismanualhandyforeasyreference.
Contents
1.ABOUTTHISPRODUCT
HandlingPrecautions ………………… 66
Features…………………………………… 70
NamesandFunctionsofButtons ……… 71
ModeChangeandFunctionsofeachmode 72
Markdescriptions ……………………… 74
2.BEFOREUSE
HowtoChargetheWatch  ……………… 75
(1)Howtocharge …………………… 75
(2)
Guidelinesofchargingduration ……76
(3)
Displayandamountofpowerreserve ……77
■Powerreserve………………… 77
■
Powersaveandsleepfunctions …79
HowtoUseRotatingBezel ………… 81
3.TIME/CALENDARMODE
HowtoUseTime/CalendarMode ……… 83
(1)Buttonsandfunctions………… 83
(2)
Howtosettime,calendar,cityname
 DSTforhometime
………………… 84
(3)Howtoadjustcontrast ……… 86
(4)
HowtosetPowerSavefunction … 87
(5)
Howtoadjustsensitivitytotapinput …88
(6)
Howtousedualtimedisplay ……89
1)
Changeover of display positions of
hometimeandworldtime
 ……… 89
2)
 Selectionofworldtimecity …90
3)
 DSTsettingforworldtimecity … 90
(7)Listofworldtimecitiesandtime
differences………………………… 91
(8)
 Alarm test and turning on/off of hourly time
signalandbuttonconfirmationsound
…… 92
4.STOPWATCHMODE
HowtoUseStopwatchMode ……… 93
(1)Buttonsandfunctions………… 93
(2)
 Changeover between lap and split
timedisplays
 ……………………… 95
(3)Howtousestopwatch………… 95
1)Accumulatedelapsedtime
measurement………………… 95
2)
Lap/splittimemeasurement …… 96
5.RECALLMODE
HowtoUseRecallMode……………… 97
(1)Buttonsandfunctions………… 97
(2)
Howtocheckmeasurementdata …98
(3) Deletionofmeasurementdata …99
6.TIMERMODE
HowtoUseTimerMode…………… 101
(1)Buttonsandfunctions……… 101
(2)Howtoset
timer ……………… 102
(3)Timeroperation ……………… 103
7.ALARMMODE
HowtoUseAlarmMode…………… 104
(1)Buttonsandfunctions……… 104
(2)Howtosetalarm……………… 105
(3)
 Engagement/disengagement of
alarm……………………………… 106
(4)
Howtostopalarmsound  ……… 106
8.SOLARMONITORMODE
HowtoUseSolarMonitorMode… 107
(1)Buttonsandfunctions……… 107
(2)Explanationofdisplay ……… 108
(3)
Toresumegenerationleveldisplay … 108
(4)Guidelinesofcharging……… 108
9. TOPRESERVETHEQUALITYOFYOURWATCH
DailyCare ……………………………… 109
WaterResistance …………………… 110
PerformanceandType……………… 112
Band……………………………………… 113
PowerSource ………………………… 115
After-SaleService…………………… 117
10.TROUBLESHOOTING
Troubleshooting ……………………… 120
HowtoResetBuilt-InIC…………… 122
11.SPECIFICATIONS
Specifications………………………… 123
1
65
2
3
4
5
6
7
8
9
10
11
64

HandlingPrecautions
Toindicatetherisksofseriousconsequencessuchassevereinjuriesunless the
followingsafetyregulationsarestrictlyobserved.
WARNING
・Immediatelystopwearingthewatchinthefollowingcases.
 ○ Ifthewatchbodyorbandbecomesedgedbycorrosion,etc.
 ○ Ifthepinsprotrudefromtheband
※
 ImmediatelyconsulttheretailerfromwhomthewatchwaspurchasedorSEIKOCUSTOMERSERVICECENTER.
・Keepthewatchandaccessoriesoutofthereachofbabiesandchildren.
 Careshouldbetakentopreventababyorachildaccidentallyswallowingaccessories.
Ifababyorachildswallowsthebatteryoraccessories,immediatelyconsultadoctoras
itwillbeharmfultothehealthofthebabyorchild.
・Donotremovethesecondarybatteryfromthewatch.
 ※Fortheprecautionsonthesecondarybattery,referto"PowerSource"onP.115.

Replacementofthesecondarybatteryrequiresprofessionalknowledgeandskill.Pleaseask
theretailerfromwhomthewatchwaspurchasedforreplacementofthesecondarybattery.
 Installationofanordinarysilveroxidebatterycangenerateheatthatcancauseburstingandignition.
CAUTION
・Avoidwearingorstoringthewatchinthefollowingplaces.
○ Placeswherevolatileagents(suchaspolishremover,bugrepellent,thinners,etc.)are
vaporizing
 ○ Placeswherethetemperaturedropsbelow5℃orrisesabove35℃foralongtime
 ○ Placesofhighhumidity ○ Placesaffectedbystrongmagnetismorstaticelectricity
 ○ Dustyplaces ○ Placesaffectedbystrongvibrations
・Ifyouobserveanyallergicsymptomsorskinirritation,
 stopwearingthewatchimmediatelyandconsultaspecialistsuchasadermatologistoran allergist.
・Othercautions
○Replacementofthemetalbandrequiresprofessionalknowledgeandskill.Pleaseask
theretailerfromwhomthewatchwaspurchasedforreplacementofthemetalband,
asthereisariskofhandorfingerinjuryandafearoflostparts.
 ○ Donotdisassembleortamperwith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rashoritchingthatmaybecausedwhentheytouchthewatch.
○Whendisposingofusedbatteries,followtheinstructionsofyourlocalauthorities.
○Ifyourwatchisofthefoborpendanttype,thestraporchainattachedtothewatch
maydamageyourclothes,orinjurethehand,neck,orotherpartsofyourbody.
Toindicatetherisks oflightinjuriesormaterialdamageunlessthe followingsafety
regulationsarestrictlyobserved.
ABOUTTHISPRODUCT
ABOUTTHISPRODUCT
66 67
11
WARNING
Donotusethewatchinscubadivingor
saturationdiving.
Thevarious tightenedinspectionsundersimulatedharsh
environment,whichareusuallyrequiredforwatchesdesigned
forscubadivingorsaturationdiving,havenotbeenconducted
onthiswatch.Fordiving,usespecialwatchesfordiving.
CAUTION
Donotpourrunningwaterdirectlyfromfauceton
tothewatch.
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turnorpulloutthecrownwhenthewatchiswet.
Watermaygetinsideofthewatch.
※ 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.
Beawareofariskthatawaterresistantwatchmaylessenitswater
resistant performance because ofdeterioration oftheadhesive on
theglassorgasket,orthedevelopmentofrustonstainlesssteel.
Donotleavemoisture,sweatanddirtonthe
watchforalongtime.
Donotwearthewatchwhiletakingabathorasauna.
Steam,soaporsomecomponentsofahotspringmayaccelerate
thedeteriorationofwaterresistantperformanceofthewatch.
CAUTION
ABOUTTHISPRODUCT
ABOUTTHISPRODUCT
68 69
11

Features NamesandFunctionsofButtons
■TIME/CALENDARFUNCTION
Thecalendaradjusts automaticallyforoddandeven monthsincludingFebruaryof
leapyearsfrom2018to2067.Summertime(daylightsavingtime[DST])canbeset.
■DUALTIMEDISPLAYFUNCTION
Hometimeandworldtime(timeofacityselectedfrom44citiesintheworld[including
GMT])areshownonthesamedisplay.DSTcanbesetforeachofthecities.
■STOPWATCHANDRECALLFUNCTIONS
Thestopwatchcanmeasureupto9hours,59minutes,and59seconds9.Upto100
lap/splittimescanbestoredinmemory,whichcanberecalledaftermeasurement.
■SOLARCHARGEFUNCTION
Thesolar panelon thedial convertslight into electrical energy topower thewatch. Oncefully
charged,thewatchkeepsrunningforapproximatelyfivemonthswithoutbeingexposedtolight.
■POWERSAVEANDSLEEPFUNCTIONS
Ifthewatchisleftuntouchedforagivenperiodoftimewithoutbeingexposedtolightandany
buttonoperation,thePowerSaveorSleepfunctionisactivatedtosavebatterypower.
■SOLARMONITORFUNCTION
Thepresentlevelofsolarpowergenerationandtheamountofpowerreservearedisplayedin11
levelsrespectively.Theyserveasguidelinesforchargingthewatch.
■TURNINGONOFBACKLIGHTWITHTAPINPUT
Whenthewatchiswornonthewrist,thebacklightlightsupfortwosecondswitha
singlelighttaponthewatchface.
・Thebuttonsarenamed Ⓐ to Ⓓ inclockwiseorderfromtheoneinthebottomleft.
・PressingButtonⒹchangesthemodes.
・Markingsinscribedonthecaseneareachbuttonindicateitsmainfunctions.
・Thedotsonthedial'sedgeindicatethecurrentminutesintheTime/Calendar
mode,andthecurrentlevelofsolarpowergenerationandtheamountofpower
reserveintheSolarMonitormode.
※ Themarkingsonthecaseandthedesignofthewatchmaydifferfrommodeltomodel.
ButtonⒸ
ButtonⒷ
ButtonⒶButtonⒹ
Solarpanel
ABOUTTHISPRODUCT
ABOUTTHISPRODUCT
70 71
11
〈Time/Calendarmode〉 〈Stopwatchmode〉 〈Recallmode〉
〈Timermode〉
Ⓓ
Ⓓ
Ⓓ
ⒹⒹ
〈Alarmmode〉
〈SolarMonitormode〉
Ⓓ
ModeChangeandFunctionsofEachMode
•WitheachpressofButton Ⓓ ,themodechangesinthefollowingorder.
・Asinglelighttaponthewatchfaceturnsonthebacklightfortwosecondsinanymode.
Modemark
shownontop
row
Function Referto:
Time/Calendarmode TIME ・
Settinganddisplayoftime,dateanddayofweek;
andfullyautomaticcalendarfrom2018to2067
・ Selection of home city; DST setting;
contrastadjustment;powersavesetting;
andadjustmentofsensitivitytotapinput
・ Worldtimedisplay;andDSTsettingforeachcity
・ Turning on/off of hourly time signal/button
operationconfirmationsound;andalarmtest
P.83
Stopwatchmode CHRONO ・
Stopwatchmeasurement(in1/10secincrement)
・ Measuresupto9hours,59minutesand59seconds9.
・ Measurementoflap/splittimesandstorage
thereof(upto100data)inchannels.

P.93
Recallmode RECALL ・Recall and deletion of data measured
andstoredintheStopwatchmode
P.97
Timermode TIMER ・
Canbesettocountdownfrom10seconds
upto9hours,59minutesand59seconds.
・ Countdowncanberepeatedupto99times.
P.101
Alarmmode ALARM ・3-channeldailyalarm
・
Alarmcanbeengaged/disengagedchannelbychannel.
P.104
SolarMonitormode SOLAR ・Display of current level of solar power
generationandamountofpowerreserve
P.107
ABOUTTHISPRODUCT
ABOUTTHISPRODUCT
72 73
11

Batterymark ： Indicatesremainingamountofpowerreservegraphically.
PowerSavemark： IndicatesthatPowerSavefunctionisinoperation.
Sleepmark ： IndicatesthatSleepfunctionisinoperation.
Stopwatchmark  ： Flasheswhenstopwatchismeasuring,andlightsupwhenitisstopped.
Timermark ： Flasheswhentimeriscounting,andlightsupwhenitisstopped.
Worldtimemark ：Indicatesthatthetimeattachedwithitisworldtime.
DSTmark ：
ShowninTime/CalendarmodewhenDSTisset.
Alarmmark ：Shownwhenalarmisengaged.
Hourlytimesignalmark ： Shownwhenhourlytimesignal/buttonoperationconfirmation
  soundisturnedon.Whenitisshown,hourlytimesignalrings
  everyhouronthehour.
MarkDescriptions
(1)Howtocharge
Exposethesolarpaneltolight.
HowtoChargetheWatch
Solarpanel
※Whenchargingthewatch,takecarenottoexposethewatchtoextremelyhightemperatures.The
operationaltemperaturerangeofthewatchisbetween-10℃and+60℃.
※
Whenusing the watchfor the firsttime afterpurchase or afterit has stoppedcompletely dueto
energydepletion,chargethewatchforsufficientdurationbyreferringtothetableonthenextpage.
Toenjoy theoptimum performanceof
thewatch, make surethat thewatch is
sufficientlychargedatalltimes.
Underthe following conditions, thewatch is not
charged sufficientlyand thebattery energyislikely
tobedepleted,resultinginstoppageofthewatch.
・Thewatchisconcealedunderthesleeve.
・Thewatchisusedor stored under anenvironment
whereitishardlyexposedtolight.
BEFOREUSE
75
2
ABOUTTHISPRODUCT
74
1
Environment1
Outdooronasunnyday
Generationlevel:10
Approx.
2minutes
Approx.
22minutes
Approx.
44minutes
Approx.
8hours
Environment2
Byawindowonasunnyday
Generationlevel:6
Environment3
Byawindowonacloudyday
Generationlevel:4
Environment4
Indoorunderfluorescentlight
Generationlevel:2
Approx.
2hours Approx. 2hours Approx. 1hour
Approx.
16hours Approx. 24hours Approx. 11hours
Approx.
33hours Approx. 48hours Approx. 22hours
Approximately1hour
Approximately10hours
Approximately20hours
Approximately200hours
Batterymark
Foronedayʼs
operation
Display
isallblank
Environment/
Generationlevel
❶
❷
❸
Batterymark/
levelofpowerreserve
Limitationson
useoffunctions
Charging
Sufficient
Medium
Low
None
None
None
Chargingisnotnecessary.
Chargingisrecommended.
→
See"Howtocharge"onP.75.
Powerreserveisdepleting.
Chargethewatchimmediately.
→
See"Howtocharge"onP.75.
(2)Guidelinesofchargingduration
Chargethewatchproperlybyreferringtothetablebelow.
※"Generationlevel"isaguidelineofthelevelofsolargenerationthattheSolarMonitormodeofthe
watchdisplaysin10levelsineachenvironmentabove.Formoredetails, see"Howto UseSolar
MonitorMode"onP.107.
Oncefullycharged, thewatchkeeps operating forapproximately5 monthswithoutbeing
exposedtolight.If anyoneofthefollowingfunctionsisusedmoreoftenorlongerthan
specifiedbelow,thewatchmayrundowninlessthan5months.
・Alarmsound:10seconds/day・Backlight:Once/dayfor2seconds
・Powersave:6hours/day
※Notethatfrequentuseofthebacklightwillcausethepowerreservetodecreasefaster.
(3)Displayandamountofpowerreserve
■ Powerreserve
Thebatterymarkonthedisplayshowstheremainingamountofbatterypower.
BEFOREUSE
BEFOREUSE
76 77
22

❹
❺
❻
・ Backlightdoesnot
lightup.
・ Alarmandhourly
timesingaldonot
sound.
・ Buttonswillnot
work.
・Stopwatchin
operationis
reset.
Charging
Limitationson
useoffunctions
Batterymark/
levelofpowerreserve
Extremelylow
Watchstops
operating
completely.
※Whenthepowerreservehasreducedtothislevel,themeasurementdata
inmemorymaybedeletedormaynotberecalledanddisplayedproperly.
Chargethewatchsufficientlyuntil
batterymarkbecomesfull.
Aftercharging,timeorothersetting
procedureisnotnecessary.

→See"Howtocharge"onP.75.
Chargethewatchsufficientlyuntil
batterymarkbecomesfull.
※ Ifanyabnormaldisplayappears,reset
thebuilt-inIC.
→ See"HowtoResetBuilt-InIC"onP.122.
Chargethewatchsufficientlyuntil
batterymarkbecomesfull.
※ Ifanyabnormaldisplayappears,reset
thebuilt-inIC.
→ See"HowtoResetBuilt-InIC"onP.122.
❶
❷・
Alarmandhourlytime
signaldonotsound.
[DisplayandfunctionswhilePowerSavefunctionisactivated]
[DisplayandfunctionswhileSleepfunctionisactivated]
Watchstatus
Limitationson
useoffunctions
Toresumenormal
operation
PSmarkflashes.
Thewatchhasbeenleft
untouchedwithoutbeing
exposedtolightandany
buttonoperationforapreset
periodoftimeorlonger.
SLmarkflashes.
Thewatchhasbeenleft
untouchedwithoutbeing
exposedtolightandany
buttonoperationforat
least72hoursafterPower
Savefunctionwasactivated.
None
Exposethewatch
tolightorpress
anyofthebuttons
todeactivatePower 
SaveorSleep
function.
■Powersaveandsleepfunctions
PowerSavefunction:Ifthewatchisleftuntouchedwithoutbeingexposedtolightandanybutton
operationfor a presetperiod of timeor longer,thePowerSavefunction is
activatedtosavebatterypower.
Sleepfunction: If approximately72 hours have passed afterthe power savefunctionis
activated,theSleepfunctionisautomaticallyactivated.
BEFOREUSE
BEFOREUSE
78 79
22
HowtoUseRotatingBezel（formodelswitharotatingbezel）
● Ifyourwatchhasarotatingbezel,thetimethathaselapsedfromacertainpoint
intimecanbemeasuredbyusingtherotatingbezelintheTime/Calendarmode.
①PressButtonⒹtoshowtheTime/Calendarmode.
※In the Time/Calendar mode, the dots on the dial's edge indicate the current minutes
graphically.
※Please note that the time measured with the rotating bezel provides the guideline of the
elapsedtimeonly.
ButtonⒹ
▽mark
Rotatingbezel Dotsondialsedge
・HowtosetthetimeperiodbeforethePowerSavefunctionisactivated
Usethe Time/CalendarSettingdisplayto select thetime periodbefore the
PowerSavefunctionisactivatedorturnitoff.
Thetimeperiodbeforeactivationcanbeselectedfrom30minutes,1hour,2
hours,and4hours.
Thedefaultsettingis30minutes.
Referto"HowtosetPowerSavefunction"onP.87.
※In thefollowing cases, neitherthe Power SavenortheSleepfunctionwillbe
activated.
・Whentheamountofpowerreserveissufficient( );and
・Whilethestopwatchortimerisinoperation.
BEFOREUSE
BEFOREUSE
80 81
22

HowtoUseTime/CalendarMode
ButtonⒸ
ButtonⒷ
ButtonⒶButtonⒹ
ButtonⒶ：・
Tosetflashingdigits(todecrease)
・ Toselectworldtimecity(inreverseorder)
ButtonⒶ （Pressandhold） ： Toset/cancelDSTforworldtime
ButtonⒷ： Tochangeoverdisplaypositionsof
hometimeandworldtime
ButtonⒷ （Pressandhold） ： ToactivateTime/Calendar
Settingfunction
ButtonⒸ：・ Tosetflashingdigits(toincrease)
・ Toselectworldtimecity(inforwardorder)
ButtonⒸ （Pressandhold） ： Toturnon/offhourlytimesignal/
buttonoperationconfirmationsound
ButtonⒹ：・
ToshowStopwatchmode
・ Toselectdigitstobeadjusted(flashing)
Minute
display
※Thedotsonthedialsedge
showthelapseofMinutes.
②When starting measurement of elapsed time, turn the rotating bezel to align
its "▽" mark with the dot at the head of the dots on the dial's edge (the dot
indicatingthecurrentminutes).
※Therotatingbezelcanbeturnedeitherclockwiseorcounterclockwise.
③ Thetimethathaselapsedthereaftercanbecheckedbyreadingthescaleonthe
rotatingbezelthatalignswiththedotattheheadofthedotsonthedial'sedge.
Ex.)Whenelapsedtimemeasurementisstartedat10:10:
Align▽markwiththedot
attheheadofthedotsonthe
dialsedge.
Startofmeasurement After20minutes
Elapsedtime
Readthescaleontherotatingbezel
thatalignswiththedotattheheadof
thedotsonthedialsedge.
⇨
(1)Buttonsandfunctions
・ PressButtonⒹtoshowtheTime/Calendarmode.After"TIME"appearsinthetoprow,thehome
andworldtimesareshowninthetopandmiddlerowsandbottomroworviceversa,respectively.
※ TheTime/Calendarmodeshowsadualtimedisplaythatindicatesboththehometimeandworldtime.
Theirdisplaypositionscanbechangedoverasdesired,andtheworldtimemark" "isshowninthe
rowwheretheworldtimeisdisplayed.Fordetails,see"(6)Howtousedualtimedisplay"onP.89.
TIME/CALENDARMODE
83
3
BEFOREUSE
82
2
Selectionof
hometimecity
Ⓓ
Seconds Minutes Hour Date Month Year
12/24H
on ／−−
ofDST
Contrast
adjustment
Powersave
setting
Adjustmentof
sensitivityto
tapinput
(Minutesetting)
Ⓓ
Ⓒ
Ⓐ
Ⓑ
③PressButtonⒹtoselecttheflashingseconddigits,andthen,pressButtonⒶor
Ⓒinaccordancewithatimesignal.Thesecondsareresetto"00."
※IfButtonⒶorⒸispressedwhiletheseconddigitscountanynumberbetween30and
59,oneminuteisaddedandtheseconddigitsareresetto"00."
※
Thetelephonetimesignalservice(TEL117)isusefulforsettingthesecondsaccurately.
④Press ButtonⒹtoselectthedigitstobe adjusted(flashing),andthen,press
ButtonⒶorⒸtosetthem.WitheachpressofButtonⒶorⒸ,thedigitsother
than seconds decrease or increase by one, and the city name changes in
reverseorforwardorder,respectively.
※ ThedigitsmovequicklybypressingandholdingButton Ⓐ or Ⓒ .
⑤After the time/calendar setting procedure is completed, press Button Ⓑ to
return to the Time/Calendar display. If the watch is left untouched with the
digitsflashing,thedisplay automaticallyreturnsto theTime/Calendarin2to
3minutes.
※The watch is equipped with a fully automatic calendar. The year, month, date and day
oftheweekare pre-programmedfrom2018 to2067.Duringthose years,thecalendar
adjustsautomaticallyforoddandevenmonthsincludingFebruaryofleapyears.
※IfDSTissetforthehometimeandthesamecityisselectedastheworldtimecityinthe
dualtimedisplay,theDSTsettingisalsoappliedtotheworldtime.
※Whilethetime/calendarsettingisbeingmade,allthedigitsofthedisplaymaylightup.
Thisisnotamalfunction.Ifthishappens,pressanyofthebuttonstoreturntotheTime/
Calendardisplay,andthen,resumethesettingprocedurefromStep①of(2)above.
(2)Howtosettime,calendar,citynameandDSTforhometime
①PressandholdButtonⒷtoactivatetheTime/CalendarSettingfunction.The
citynamecurrentlysetasthehometimecityisdisplayed.
②WitheachpressofButtonⒹ,the digitstobe adjusted (flashing) changein
thefollowingorder:
※Oncetheyear,monthanddateareset,thedayoftheweekissetautomatically.
※IfGMTisselectedasthehomecity,thedisplayforsettingDSTisskipped.
※WhenDSTissetto"on,"theDSTmarklightsup,andthetimeisadvancedbyonehour.
・ DaylightSavingTime(DST)
Thedaylightsavingtime(DST)isasystemofadvancingthestandardtimebyonehourto
makethebestuseofthedaylightduringsummer.Itisadoptedbyabout80countriesinthe
world.TheperiodwhenDSTisineffectvariesfromcountrytocountryorregiontoregion.
※  ThetimetobeadvancedforDSTmaybechangedfromtimetotimebytheauthoritiesconcerned
ineachcountryorregion.
※Thetimetobeadvancedmaybein15-or30-minuteincrementsinsomecountriesorregions.
TIME/CALENDARMODE
TIME/CALENDARMODE
84 85
33

Low Contrast High
−2 −1 0 1 2
Ⓒ
Ⓐ
Ⓓ
Ⓒ
Ⓐ
Contrastlevel:0
Ⓑ
1hourissetfor
PowerSavefunction PowerSavefunctionisturnedoff
OFF 0.5H 1.0H 2.0H 4.0H
Ⓒ
Ⓐ
Ⓓ
Ⓒ
Ⓐ
Ⓑ
Ⓓ
Ⓒ
Ⓐ
Ⓑ
(3)Howtoadjustcontrast
Thecontrast(brightness)ofthedisplaycanbeadjusted.Itisfactory-adjustedto"0."
・PressButtonⒹtoshowtheTime/Calendarmode.
①Pressandhold ButtonⒷ to activatethe Time/CalendarSettingfunction. The
hometimecitycurrentlyselectedappearsinthetoprow.
②PressButtonⒹrepeatedlytoshowthecontrastadjustmentdisplay(CONT).
③PressButtonⒶorⒸtoadjustthecontrast.Thedisplaybecomesbrighterwith
eachpressofButtonⒸ,anddarkerwitheachpressofButtonⒶ.
④After the contrast adjustment is completed, press Button Ⓑ to return to the
Time/Calendardisplay.Ifthewatchisleftuntouchedwiththedigitflashing,the
displayautomaticallyreturnstotheTime/Calendarin2to3minutes.
(4)HowtosetPowerSavefunction
ThetimebeforethePowerSavefunctionisactivatedcanbeset.Itisfactory-adjustedto
30minutes(0.5H).
・PressButtonⒹtoshowtheTime/Calendarmode.
①PressandholdButton
Ⓑ toactivatetheTime/CalendarSettingfunction.Thehometime
citycurrentlyselectedappearsinthetoprow.
②PressButtonⒹrepeatedlytoshowthePowerSavesettingdisplay(P-SAVE).
③
PressButton Ⓐ or Ⓒ toselectthetimebeforePowerSavefunctionisactivatedorturnit"OFF."
※ Ifthewatchisleftuntouchedwithoutbeingexposedtolightandanybuttonoperationforapresettimeor
longer,thePowerSavefunctionturnsoffthedisplaytoreduceenergyconsumption.TodeactivatethePower
Savefunctionandreturntotheperviousdisplay,exposethewatchtolightorpressanyofthebuttons.
④AfterthePowerSavesettingiscompleted,pressButtonⒷtoreturntotheTime/Calendar
display.Ifthewatchisleftuntouchedwiththedigitsflashing,thedisplayautomatically
returnstotheTime/Calendarin2to3minutes.
TIME/CALENDARMODE
TIME/CALENDARMODE
86 87
33
Low
−1 0 1
Ⓒ
Ⓐ
Sensitivity
totapinput High
Ⓓ
Ⓒ
Ⓐ
Sensitivitytotapinput:0
Ⓑ
Middlerow:Hometime
Bottomrow:Worldtime
ⒷⒷ
Ⓑ
Worldtimemark Worldtimemark
Date
Dayoftheweek Worldtimecity
Timedifference
Middlerow:Worldtime
Bottomrow:Hometime
(5)Howtoadjustsensitivitytotapinput
When the watch is worn on the wrist, the backlight can be activatedfortwosecondsbylightly
tappingthewatchfaceonce.Thesensitivitytotapinputcanbeadjusted.Itisfactory-adjustedto"0."
・PressButtonⒹtoshowtheTime/Calendarmode.
①PressandholdButton
Ⓑ toactivatetheTime/CalendarSettingfunction.Thehometime
citycurrentlyselectedappearsinthetoprow.
②
PressButtonⒹrepeatedlytoshowthedisplayforadjustingthesensitivitytotapinput(TAP).
③ PressButton Ⓐ or Ⓒ toadjust thesensitivity.The sensitivitycan be increasedby pressing
Button
Ⓒ ,anddecreasedbypressingbutton Ⓐ .
※Ifthebacklightwillnotlightupeasilybylightlytappingthewatchface,setthesensitivity
totapinputto"1."
④Aftertheadjustmentofthesensitivitytotapinputiscompleted,pressButtonⒷtoreturn
totheTime/Calendardisplay.Ifthewatchisleftuntouchedwiththedigitsflashing,the
displayautomaticallyreturnstotheTime/Calendarin2to3minutes.
(6)Howtousedualtimedisplay
The Time/Calendar mode shows a dual time display that indicates both the
hometimeandworldtimeonthesamedisplay.
Theworldtimecitycanbeselectedfrom44citiesintheworld,andDSTcanbe
setforeachofthem.
※WhenGMTisselectedastheworldtimecity, DSTsettingcannotbemade.
1）Changeoverofdisplaypositionsofhometimeandworldtime
WitheachpressofButtonⒷ,thedisplaypositionsofthehometimeandworldtime
arechangedoverbetweenthemiddleandbottomrows.
※Theworldtimemark " "isshownintherowwheretheworldtimeisdisplayed.
TIME/CALENDARMODE
TIME/CALENDARMODE
88 89
33

Ⓒ
Worldtimecity
（Anchorage）
Timedifference
Worldtimecity
（Honolulu）
Timedifference
Ⓒ
Ⓐ
Ⓒ
Ⓐ
Ⓐ
Ⓐ
ⒶⒶ
Ⓐ
Pressand
hold
Ⓐ
DSTmark
Pressand
hold
Ⓐ
DSTmark
No. Code Worldtimecity
DifferencefromGMT
No. Code Worldtimecity
DifferencefromGMT
1 GMT GMT 00:00 23 BJS Beijing ＋ 08：00
2 LIS Lisbon 00:00 24 SEL Seoul ＋ 09：00
3 LON London 00:00 25 TYO Tokyo ＋ 09：00
4 PAR Paris ＋ 01：00 26 ADL Adelaide ＋ 09：30
5 ROM Rome ＋ 01：00 27 GUM Guam ＋ 10：00
6 BER Berlin ＋ 01：00 28 SYD Sydney ＋ 10：00
7 ATH Athens ＋ 02：00 29 OOL GoldCoast ＋ 10：00
8 CAI Cairo ＋ 02：00 30 NOU Noumea(NewCaledonia) ＋ 11：00
9 MOW Moscow ＋ 03：00 31 WLG Wellington ＋ 12：00
10 JED Jeddah ＋ 03：00 32 HNL Honolulu − 10：00
11 BGW Baghdad ＋ 03：00 33 ANC Anchorage − 09：00
12 THR Tehran ＋ 03：30 34 YVR Vancouver − 08：00
13 DXB Dubai ＋ 04：00 35 LAX LosAngeles − 08：00
14 KBL Kabul ＋ 04：30 36 DEN Denver − 07：00
15 KHI Karachi ＋ 05：00 37 CHI Chicago − 06：00
16 DEL Delhi ＋ 05：30 38 NYC NewYork − 05：00
17 DAC Dhaka ＋ 06：00 39 YMQ Montreal − 05：00
18 RGN Yangon ＋ 06：30 40 BOS Boston − 05：00
19 BKK Bangkok ＋ 07：00 41 SDQ SantoDomingo − 04：00
20 JKT Jakarta ＋ 07：00 42 BUE BuenosAires − 03：00
21 SIN Singapore ＋ 08：00 43 RIO RiodeJaneiro − 03：00
22 HKG HongKong ＋ 08：00 44 PDL Azores − 01：00

(AsofDecember2017)
（7）Listofworldtimecitiesandtimedifferences
(GMTstandsforGreenwichMeanTime."+"and"-"meanthatthetimeofthecityisaheadofandbehindGMT,respectively.)
2)Selectionofworldtimecity
While the world time is shown in the middle row, press Button Ⓐ or Ⓒ  to select
thedesiredworldtimecity. WitheachpressofButton
 Ⓐor Ⓒ,theworldtimecity
changesonebyoneinreverseorforwardorder,respectively.
3)DSTsettingforworldtimecity
WitheachcontinuouspressofButtonⒶ,DSTcanbesetandcanceledfortheworld
timealternately,irrespectiveofthedisplaypositionoftheworldtime.
※ WhenDSTissetfortheworldtime,the"DST"markisshownbelowtheworldtimemark" ,"
andthetimeisadvancedbyonehour.
TIME/CALENDARMODE
TIME/CALENDARMODE
90 91
33
(8) Alarmtestandturningon/offofhourlytimesignalandbuttonoperationconfirmationsound
●With each continuous press of Button Ⓒ in the Time/Calendar mode, the hourly time
signal/buttonoperationconfirmationsoundisturnedonandoffalternately.Whenitisset,
thehourlytimesignalmark" "lightsup.
Ⓒ
Ⓒ
Pressand
hold
Ⓒ
[Hourlytimesignal/
buttonoperation
confirmationsound
isturnedOFF]
Hourlytimesignalmark
[Hourlytimesignal/
buttonoperation
confirmationsound
isturnedON]
●Thealarm soundcan betestedby pressingand
holdingbothButtonsⒶandⒸatthesametime
intheTime/Calendarmode. Ⓒ
Ⓐ
HowtoUseStopwatchMode
・ Thestopwatchmeasuresupto9hours,59minutesand59seconds9in1/10-secondincrements.
・Dataofupto100lapscanbemeasuredandstored.
・
Thedatameasuredfromthe startuntilthestopwatchis resetisrecordedonachannel-by-
channelbasis,andtherecordingofmeasurementdatacanberepeateduntilthetotalnumber
oflapsstoredinmemoryexceeds100.
・ThedatameasuredandrecordedintheStopwatchmodecanberecalledandchecked
intheRecallmode.
(1)Buttonsandfunctions
・PressButtonⒹtoshowtheStopwatchmode.After"CHRONO"andthememory
channelnumbertobeusedinthenextmeasurement,suchas"CH5,"areshown
inthetopandmiddlerows,respectively,thelaporsplittimedisplayappears.
Thebottomrowshowsthecurrenttime.
ButtonⒸ
ButtonⒷ
ButtonⒶButtonⒹ
ButtonⒶ：Lap・split/reset
ButtonⒷ：To
changeoverbetweenlapand
splittimedisplays
ButtonⒸ：Start/stop
ButtonⒹ：ToshowRecallmode
STOPWATCHMODE
93
4
TIME/CALENDARMODE
92
3

Start Finish
Laptime
Splittime
Laptimereferstothetime
requiredtogoanygivensection
oftheentiredistance.Splittime
referstothetimerequiredtogo
fromthestarttoanygivenpoint
oftheentiredistance.
Measurementprocedure Minimummemoryusage
1 Start→Stop→Reset 3to4unitsofmemory
2 Start→Stop/Restart→Stop→Reset 3to4unitsofmemory
3 Start→Lap→Stop→Reset 4to5unitsofmemory
4 Start→Stop/Restart→Lap→Stop→Reset 4to5unitsofmemory
5 Start→Lap→Lap→Stop→Reset 5to6unitsofmemory
●Remarksonmemoryusage
※The best and average lap times are recorded besides the measurement data, and at least three
unitsofmemoryareused.Though100unitsofmemorycanbeusedforstoringmeasurementdata
when only one channel ("CH1") is used, the total number of units of memory available for storing
measurementdataislessthan100ifmorethanonechannelofmemoryisused.Forexample,iftwo
channelsareused,upto97unitsofmemorycanbeusedforstoringmeasurementdata.
※Whenonlyonechannel("CH1")isusedformeasurement,upto100lapsofdatacanbestored.After
the100thlap,thedataismeasuredanddisplayed,butwillnotbestoredinmemoryforlaterrecall.
※
Ifmorethanonechannelisusedandthenumberofdatainmemoryhasexceededthelimitduringmeasurement,
thedatainmemoryisdeletedonachannel-by-channelbasisfromtheoldestone,torecordnewdata.
※ Forthemethodofselectivelydeletingunnecessarydata,referto"(3)Deletionofmeasurementdata"onP.99.
(2)Changeoverbetweenlapandsplittimedisplays
[Laptimedisplay]
[Splittimedisplay]
ⒷⒷ
Ⓑ
・With each press of Button Ⓑ, the
displaychangesoverbetweenthelap
timeandsplittimealternately.
※ Changeoverofdisplayscanbemadeduring
measurement, except while the lap time
and flashing "LAP No." are kept displayed
afteralaptimemeasurementismade.
(3)Howtousestopwatch
1) Accumulatedelapsedtimemeasurement(e.g.,whensplittimedisplayisused)
① Checkingthatthestopwatchhasbeenreset,pressButtonⒸtostartmeasurement.
②PressButtonⒸtostopmeasurement.
③PressButtonⒶtoresetthestopwatch.
Ⓐ
Reset
Start Stop Restart Stop
Ⓒ
Ⓒ
Ⓒ
ⒸⒸ Ⓒ
ⒸⒶ
Ⓒ
STOPWATCHMODE
STOPWATCHMODE
94 95
44
※ ThemeasurementcanbestoppedandrestartedasmanytimesasnecessarybypressingButton Ⓒ .
※ Evenifthemodeischangedtoanotherduringmeasurement,thestopwatchcontinuesmeasuring.
※W h e n t h e to t a lt i m e m e a su r e dr e a c he s 9h o u r s , 5 9m i nu t e sa n d 5 9 seconds9,thestopwatch
isstoppedandresetautomatically.
2)Lap/splittimemeasurement(e.g.,whenlaptimedisplayisused)
① Checkingthatthestopwatchhasbeenreset,pressButtonⒸtostartmeasurement.
②WitheachpressofButtonⒶ,alap/splittimeismeasured.
③PressButtonⒸtostopmeasurement.
④PressButtonⒶtoresetthestopwatch.
Ⓐ
Reset
Start Lap/split stop
ⒸⒸ
ⒸⒸ
Ⓐ
Ⓐ
Ⓐ
Ⓐ
Ⓐ
Lap/split
※Afteralap/splittimeismeasured,thelaptimemeasurediskept
displayedinthemiddlerowforapproximately10secondswith
thelapNo.flashinginthetoprow.
※WhenthelapNo.reaches"100,"flashing"LAP-100"and"FULL"
are shown alternately to indicate that the memory capacity
is exhausted. After LAP-100, lap/split data is measured and
displayedbutwillnotbestoredforlaterrecall.
HowtoUseRecallMode
・ThedatameasuredintheStopwatchcanberecalledandchecked.
・Thestoreddataisdisplayedchannelbychannel.
・Thetotaltimeandthebestandaveragelaptimesaredisplayed.
・Thedateofmeasurement(monthanddate)isdisplayedforeachchannel.
(1)Buttonsandfunctions
・PressButtonⒹtoshowtheRecallmode."Recall,"thememorychannelused
forthelastmeasurement,suchas"CH10,"andthedateofmeasurementare
displayedinthetop,middleandbottomrows,respectively.
ButtonⒸ
ButtonⒷ
ButtonⒶButtonⒹ
ButtonⒶ：Todisplaymeasurementdata
ButtonⒷ：Tochangeoverbetweenlapand
splittimedisplays
ButtonⒷ（
Pressandhold ）：Todeletedata
ButtonⒸ：Toselectmemorychannel
(inreverseorder)
ButtonⒹ：ToshowTimermode
97
5
RECALLMODE
STOPWATCHMODE
96
4

(2)Howtocheckmeasurementdata
①PressButtonⒸtoselectthememorychannelyouwishtocheck.
②WitheachpressofButton
Ⓐ,themeasurementdata(totaltime,lap/splittimes,
andthebestandaveragelaptimes)isshowninthefollowingorder.
ⒶⒶ
Ⓐ
ⒶⒶ
Ⓐ
Totaltime LaptimeofLAP-001
LaptimeofLAP-050
Bestlaptime
Averagelaptime
Splittime
(insecondincrements)
Memory
channel
Dateofmeasurement
(Monthanddate)
Ⓐ
ⒶⒶ Ⓐ
Ⓐ
Ⓒ
※BypressingandholdingButtonⒶwhilealap/splittimeisdisplayed,thelap/splitnumbermoves
quickly.
※Whilethebestlaptimeisdisplayed,"BEST"andthelapNo.thereofareshownalternately.
※BypressingBut tonⒸwhileanydataisshow n ,thedisplaymovestotheimmediatelyprevious
memorychannel.
※BypressingButtonⒷwhilealaporsplittimeisdisplayed,thedisplaychangesoverbetween
lapandsplittimesalternately.
※
Thelaporsplittimedisplayedinthebottomrowisshowninsecondsinsteadof1/10seconds.
ⒷⒷ
Ⓑ
Splittime
(inseconds)
Laptime
(inseconds)
（3）Deletionofmeasurementdata
●Todeletedatachannelbychannel
①PressButtonⒹtoshowtheRecallmode.
※Thenewestmemorychannelisdisplayed.
②PressButtonⒸtoselectthememorychannelyouwishtodelete.
③PressandholdButton
Ⓑuntilflashing"CLR?"appears.
④  KeepButtonⒷpressedfurther,andreleaseitwhen"ALL"isshowninthemiddlerow.
※Theselectedchannelisdeletedastheconfirmationsoundrings"bip,bip,bip."
Ⓑ
Ⓑ
Pressand
hold
Ⓑ
Keep Ⓑ
pressed
Ⓑ
Release
Ⓑ
CH8beforedeletion
Checkdate
forcompletion
ofdeletion
Bip,bip,bip
98 99
55
RECALLMODE
RECALLMODE
※ Afterdeletionofamemorychannel,thechannelnumbersofthechannelsafterthedeletedone
aredecreasedbyone.Forexample,if"CH7"isdeletedamongthe 10 c ha nn e ls inm e m or y, " C H8 ," 
"CH9"and"CH10"beforedeletionarerenumberedas"CH7,""CH8"and"CH9,"respectively.
※  Ifanychannelotherthanthenewestoneisdeleted,thesamechannelnumberasthatofthedeleted
channelisdisplayedafterdeletion.Checkthedateofmeasurementforcompletionofdeletion.
●Todeleteallthedatainmemory
①PressButtonⒹtoshowtheRecallmode.
※Thenewestmemorychannelisdisplayed.
②PressandholdButton Ⓑuntilflashing"CLR?"appears.
③ KeepButtonⒷpressedfurther,and"ALL"isdisplayedinthemiddlerowasthe
confirmationsoundrings"bip,bip,bip."KeepButtonⒷpressedfurtheruntil"----"
isshowninthemiddlerowwithalongbeep.
※When no measurement data is stored in memory, the display showing "- - - -" (the
rightmost one in the illustration above) is displayed when Button
Ⓓ is pressed to
showtheRecallmode.
Ⓑ
ⒷⒷ
Pressand
hold
Ⓑ
Keep Ⓑ
pressed
Bip,bip,bip
Keep Ⓑ
pressed
Alongbeep
HowtoUseTimerMode
・Thetimerisacountdowntimerthatcountsdownthesettime.
・From 10 seconds up to 9 hours, 59 minutes and 59 seconds can be set in
1-secondincrements.
・Thetimercanbesettocountdownthesettimerepeatedlyupto99times.
During countdown, the number of times the countdown has been repeated
includingthecurrentoneisshowninthetoprow.
(1)Buttonsandfunctions
・PressButtonⒹtoshowtheTimermode.After"TIMER"isshowninthetoprow,
thenumberofrepetitions,countdowntimeandcurrenttimearedisplayedinthe
top,middleandbottomrows,respectively.
ButtonⒸ
ButtonⒷ
ButtonⒶButtonⒹ
ButtonⒶ：・Reset
・
Tosetflashingdigits(todecrease)
ButtonⒷ（ Pressandhold ）：Toactivatetimer
settingfunction
ButtonⒸ：・Start/stop
・
Tosetflashingdigits(toincrease)
ButtonⒹ：・ToshowAlarmmode
・
Toselectdigitstobeadjusted
(flashing)
TIMERMODE
101
6
100
5
RECALLMODE

(2)Howtosettimer
Ex.)Tosetcountdowntimeto"3minutes"andnumberofrepetitionsto"5"
①PressButtonⒹtoshowtheTimermode.
② PressandholdButton Ⓑ toactivatetheTimerSettingfunction.Thehourdigitsstart
flashing.WitheachpressofButton
Ⓓ ,thedigitstobeadjustedcanbeselectedinorder.
※Unlessthetimerhasbeenreset,theTimerSettingfunctionwillnotbeactivated.For
themethodofresettingthetimer,referto"Timeroperation"onP.103.
③WitheachpressofButtonⒸ,theflashingdigitsincreasebyone.(Eachpress
ofButton
Ⓐ decreasesthedigitsbyone.)
※ThedigitsmovequicklybypressingandholdingButtonⒶorⒸ.
④After all the adjustments are completed, press Button Ⓑ to deactivate the
TimerSettingdisplay.Ifthewatchisleftuntouchedwiththedigitsflashing,the
displayautomaticallyreturnstotheTimerin2to3minutes.
Ⓓ
[Seconds]
[Minutes]
[Hour] [
Numberofrepetitions ]
Ⓓ
ⒹⒹ
Ⓓ
Ⓓ
Ⓓ
Ⓓ
Ⓒ
Ⓐ
Ⓒ
Ⓐ
Ⓒ
Ⓐ
Ⓒ
Ⓐ
(3)Timeroperation
①Checkingthatthetimerhasbeenreset,pressButtonⒸtostarttimercountdown.
②PressButtonⒸtostoptimercountdown.
③PressButtonⒶtoresetthetimer.
※ ThecountdowncanbestoppedandrestartedasmanytimesasnecessarybypressingButton Ⓒ .
※ Evenifthemodeischangedtoanotherduringcountdown,thetimercontinuescounting.
※Thewarningbeepstartsringing3secondsbeforethe set timeisup,andthetimeup
beepsoundsfor5secondswhenthesettimeisup.
※Tostopthetimeupbeepmanually,pressButtonⒶ,Ⓑ,ⒸorⒹ.
Ⓐ
Reset
Start Stop Restart Stop
Ⓒ
Ⓒ
Ⓒ
ⒸⒸ Ⓒ
ⒸⒶ
Ⓒ
※Whentheremainingcountdowntimereacheslessthan
one minute during each repetition of countdown, the
dotsonthedial'sedgelightup,andgooutonebyonein
stepwiththedecreaseoftheremainingseconds.
TIMERMODE
TIMERMODE
102 103
66
HowtoUseAlarmMode
Thealarmisathree-channeldailyalarmthatcanbesettoring daily at three
differentdesignatedtimes(hourandminutes).
Thealarmcanbeengagedordisengaged("on"or"--")channelbychannel.
【Caution】ThealarmringsaccordingtothehometimesetintheTime/Calendarmode.It
cannotbesettoringaccordingtotheworldtime.
(1)Buttonsandfunctions
・  PressButtonⒹt os h ow th eA l a rmm o de .A f t er "A L A R M "i s sh o w nin th et o pr ow, th ea l ar m
channel("AL1--,""AL2--"or"AL3--")appearsinstead.Thealarmtimesetforeachalarm
channelandthecurrenttimeareshowninthemiddleandbottomrows,respectively.
※Whenthealarmisengaged,"on"isshowninsteadof"--,"suchas"AL1on."
ButtonⒸ
ButtonⒷ
ButtonⒶButtonⒹ
ButtonⒶ：・
Toengage/disengagealarm
・ Tosetflashingdigits(todecrease)
ButtonⒷ（ Pressandhold ）： Toactivatealarm
settingfunction
ButtonⒸ：・ Tochangeoveralarmchannels
・ Tosetflashingdigits(toincrease)
ButtonⒹ：・ ToshowSolarMonitormode
・ Toselectdigitstobeadjusted
(flashing)
(2)Howtosetalarm
・Thealarmsettingprocedureisthesameforallthethreechannels.
Ex.)Tosetthealarmtimeof"AL1"to"6:30AM"
①PressButtonⒸtoshow"AL1."Then,pressandholdButtonⒷtoactivatethe
AlarmSettingfunction.Thehourdigitsstartflashing.
②WitheachpressofButtonⒹ,thehourandminutedigitsflashalternately.Press
ButtonⒹtoselectthedigitstobeadjusted(flashing).
③WitheachpressofButtonⒸ,theflashingdigitsincreasebyone.(Eachpress
ofButton
Ⓐ decreasesthedigitsbyone.)
※ThedigitsmovequicklybypressingandholdingButtonⒶorⒸ.
④After all the adjustments are completed, press Button Ⓑ to deactivate the
AlarmSettingdisplay.Ifthewatchisleftuntouchedwiththedigitsflashing,the
displayautomaticallyreturnsto"AL1"in2to3minutes.
※BydeactivatingtheAlarmSettingfunction,thealarmisengagedautomatically.
(Hour:6:00AM)
ⒸⒸ
Ⓓ
Ⓐ
(Minutes:30minutes)
Ⓐ
ALARMMODE
ALARMMODE
104 10 5
77

(3)Engagement/disengagementofalarm
・WitheachpressofButton Ⓐ intheAlarmdisplay,thealarmisengaged("on")
anddisengaged("--")alternately.
※Thealarmmark" "isshownifthealarmisengagedinanyofthethreechannels.
※The alarm mark " " is shown in any mode except when the power save, sleep or
settingfunctionisactivated.
(4)Howtostopalarmsound
・Thealarmringsatthedesignatedtimefor10seconds.
Tostopitmanually,pressanyofthebuttons.
※Thealarmsoundcanbestoppedwhenanymodeisshownonthedisplay.
（Alarmwillring） （Alarmwillnotring）
Alarmdisengaged
Alarmmarkisnotshown
Alarmengaged
Alarmmark isshown
Ⓐ
Ⓐ
Ⓐ
HowtoUseSolarMonitorMode
Thepresentgenerationlevelofthesolarpanelandtheamountofpowerreserve
aredetectedanddisplayedin11levelsrespectively.Theyprovidetheguidelines
for performing charging. The generation level is indicated numerically in the
middlerowaswellasbythenumberofdotsshownontherightsideofthedial's
edge.Theamountofpowerreserveisindicatedbythenumberofdotsshownon
theleftsideofthedial'sedge.
(1)Buttonsandfunctions
・Press Button Ⓓ to show the Solar Monitor mode. After "SOLAR" appears in
thetoprowandthedotsonbothsidesofthedial'sedgeflash,"SOLAR"and
"LEVEL"areshownalternatelyinthetoprow,andthegenerationlevelandthe
currenttimeareshowninthemiddleandbottomrows,respectively.
ButtonⒶ：Toresumegenerationlevel
display
ButtonⒷ：Disabled
ButtonⒸ：Disabled
ButtonⒹ：ToshowTime/Calendarmode
ButtonⒷ
ButtonⒶ
ButtonⒸ
ButtonⒹ
SOLARMONITORMODE
107
8
ALARMMODE
106
7
After
1minute
Generation
level
Amountof
powerreserve
Ⓐ
Ⓐ
Generation
level
Amountof
powerreserve Amountof powerreserve
DailyCare
● Thewatchrequiresgooddailycare
・Wipeawaymoisture,sweatordirtwithasoftcloth
・After soaking thewatchinseawater,besure to wash thewatchin clean
purewaterandwipeitdrycarefully.
※ Ifyourwatchisratedas"Non-waterresistant"or"waterresistantfor
everydaylife,"donotwashthewatch. Do notpourrunningwater directly
fromfaucetontothewatch.Putsomewaterintoabowlfirst,andthemsoak
thewatchinthewatertowashit.
Performanceandtype → P.112.
Waterresistance → P.110.
Generationlevel:
Itis indicated in 11levels (00to 10)bythe value in the
middlerowaswellasbythenumberofdotsonthedial'sedge
from5to1o'clockpositions."1"inthemiddlerowcorresponds
totwodotsonthedial'sedge.Theindicationisupdatedevery
secondfor1minute,andceasestobedisplayedthereafter.
Amountofpowerreserve:
Itisindicatedin11levels(0to100%)bythenumberofdotsonthe
dial'sedgefrom7to11o'clockpositions.Itisupdatedeveryminute.
・When "- - - -" is shown in the middle
row, press Button
Ⓐ . The present
generation level is indicated for 1
minute.
(4)Guidelinesofcharging
・Whenthe generation levelis"06" or higher,the watch ischargedsatisfactorily. The
topenddotofthedotsindicatingtheamountofpowerreserveflashestoindicatethat
chargingisprogressing(see"(1)Howtocharge"onP.75).
・Whenthenumberofdotsindicatingtheamountofpowerreservehasreducedtotwo,
chargethewatchimmediately.Thepowerreserveisdepleting,andthebatterymarkon
thedisplaypanelisflashing(see"(3)Displayandamountofpowerreserve"onP.77).
(2)Explanationofdisplay
(3)Toresumegenerationleveldisplay
109
TOPRESERVETHEQUALITYOFYOURWATCH
9
SOLARMONITORMODE
108
8

WaterResistance
Refertothetablebelowforthedescriptionofeachdegree
ofwaterresistantperformanceofyourwatchbeforeusing.
（RefertoP.112.）
Indicationonthecaseback Waterresistantperformance
Noindication Non-waterresistance
WATERRESISTANT Waterresistanceforeverydaylife
WATERRESISTANT
5BAR
Waterresistanceforeverydaylifeat
5barometricpressures
WATERRESISTANT
10(20)BAR
Waterresistanceforeverydaylifeat
10(20)barometricpressures.
Conditionofuse
Avoiddropsofwaterorsweat
Thewatchwithstandsaccidental
contactwithwaterineverydaylife.
Thewatchissuitableforsportssuchasswimming.
Thewatchissuitablefordivingnotusinganaircylinder.
Notsuitablefor
swimming
WARNING
110 111
TOPRESERVETHEQUALITYOFYOURWATCH
TOPRESERVETHEQUALITYOFYOURWATCH
99
″•
⁅󰿋•․‟••″•
PerformanceandType
※Thefigureaboveisoneexample.Performanceofyourwatchisdifferentfromabovesample.
Thecasebackshowsthecaliberandperformanceofyourwatch
Waterresistantperformance
RefertoP.110.
Calibernumber
Thenumbertoidentifythetypeof
yourwatch
Band
Thebandtouchestheskindirectlyandbecomesdirtywithsweatordust.
Therefore,lackofcaremayacceleratedeteriorationofthebandorcauseskinirritation
orstainonthesleeveedge.Thewatchrequiresalotofattentionforlongusage.
● Metallicband
・  Moisture,sweatorsoilwillcauserustevenonastainlesssteelbandiftheyareleftforalongtime.
・ Lackofcaremaycauseayellowishorgoldstainonthelowersleeveedgeofshirts.
 ・ Wipeoffmoisture,sweatorsoilwithasoftclothassoonaspossible
・
Tocleanthesoilaroundthejointgapsoftheband,wipeitoutinwaterandthenbrushitoffwithasofttoothbrush.
 （Protectthewatchbodyfromwatersplashesbywrappingitupinplasticwrapetc.）
・Becausesometitanbraceletsusepinsmadeofstainlesssteel,whichhas
outstandingstrength,rustmayforminthestainlesssteelparts.
・
Ifrustadvances,pinsmaypokeoutordropout,andthewatchcasemayfalloffthebracelet,ortheclaspmaynotopen.
・ Ifapinispokingout,personalinjurymayresult.Insuchacase,refrainfromusingthewatchandrequestrepair.
● Leatherband
・ Aleatherbandissusceptibletodiscolorationanddeteriorationfrommoisture,sweatanddirectsunlight.
・ Wipeoffmoistureandsweatassoonaspossiblebygentlyblottingthemupwithadrycloth.
 ・ Donotexposethewatchtodirectsunlightforalongtime.
112 113
TOPRESERVETHEQUALITYOFYOURWATCH
TOPRESERVETHEQUALITYOFYOURWATCH
99

・ Pleasetakecarewhenwearingawatchwithlight-coloredband,asdirtislikelytoshowup.
・ RefrainfromwearingaleatherbandwatchotherthanAquaFreebandswhilebathing,swimming,andwhenworking
withwaterevenifthewatchitselfiswater-resistantenforcedfordailyuse（10-or20-BARwaterresistant）.
● Polyurethaneband
・ Apolyurethanebandissusceptibletodiscolorationfromlight,andmaybedeterioratedbysolventoratmospherichumidity.
・ Especiallyatranslucent,white,orpalecoloredbandeasilyadsorbsothercolors,resultingincolorsmearsordiscoloration.
 ・ Washoutdirtinwaterandcleanitoffwithadrycloth.
  （Protectthewatchbodyfromwatersplashesbywrappingitupinplasticwrapetc.）
・ Whenthebandbecomesless flexible,havethebandreplaced witha newone.Ifyou
continuetousethebandasitis,thebandmaydevelopcracksorbecomebrittleovertime.
● Siliconeband
・Asformaterialcharacteristics,thebandiseasilydirtied,andmaybestained
anddiscolored.Wipeoffdirtwithawetclothorcleaningtissue.
・Unlikebandsofothermaterials,cracksmayresultinthebandbeingcut.Take
carenottodamagethebandwithanedgedtool.
Notesonthe
lengthofthe
band
Notesonskin
irritationandallergy
Skinirritationcausedbyabandhasvariousreasonssuchasallergytometals
orleathers,orskinreactionsagainstfrictionondustorthebanditself.
Adjustthebandtoallowalittleclearancewithyourwristto
ensureproperairflow.Whenwearingthewatch,leaveenough
roomtoinsertafingerbetweenthebandandyourwrist.
PowerSource
Thebatteryusedinthiswatchisaspecialsecondarybattery,whichistotallydifferentfrom
ordinarysilveroxidebatteries.
Unlikeotherdisposablebatteriessuchasdry-cellbatteriesorbuttoncells,thissecondarybattery
canbeusedoverandoveragainbyrepeatingthecyclesofdischargingandrecharging.
However,forvariousreasonssuchaslong-termuseorusageconditions,thecapacityor
rechargingefficiencyofthesecondarybatterymaygraduallydeteriorate.Wornorcontaminated
mechanicalpartsordegradedoilsmayalsoshortenrechargingcycles.Iftheefficiencyofthe
secondarybatterydecreases,havethewatchrepaired.
■Remarksonreplacingthesecondarybattery
・Donotremovethesecondarybatteryyourself.
・Replacement of the secondarybattery requiresprofessional
knowledgeandskill.Pleaseasktheretailerfromwhomthewatchwas
purchasedforrepair.
・
Installationofanordinarysilveroxidebatterycangenerateheat thatcan
causeburstingorignition.
NOTICE
114 115
TOPRESERVETHEQUALITYOFYOURWATCH
TOPRESERVETHEQUALITYOFYOURWATCH
99
※ Referto"Guidelinesofchargingduration"onP.76tocheckthetimerequiredforfullychargingthewatch.
Whenthesecondarybatteryisfullycharged,theoverchargepreventionfunction
is automaticallyactivated to avoidfurthercharging. There is noneed to worry
about damagecausedby overchargingno matterhow muchthe secondary
batteryischargedinexcessofthe"timerequiredforfullychargingthewatch".
※Overchargepreventionfunction
■Notesonchargingthewatch
・ When charging the watch, do not place the watch in close proximity
toanintenselightsourcesuchaslightingequipmentforphotography,
spotlightsorincandescent lights, as the watch may be excessively
heatedresultingindamagetoitsinternalparts.
・ Whenchargingthewatchbyexposuretodirectsunlight,avoidplacesthat
easilyreachhightemperatures,suchasacardashboard.
・Alwayskeepthewatchtemperatureunder50℃.
NOTICE
After-SaleService
・Contacttheretailer from whomthe watch waspurchasedor SEIKO
CUSTOMERSERVICECENTERforrepairoroverhaul.
・Withintheguaranteeperiod, present thecertificateof guarantee to
receiverepairservices.
・Guaranteecoverageis provided inthe certificate of guarantee.Read
carefullyandretainit.
・Forrepairservicesaftertheguaranteeperiodhasexpired,ifthefunctions
ofthe watch canbe restored by repairwork, we willundertakerepair
servicesuponrequestandpayment.
● Notesonguaranteeandrepair
・SEIKOmakesitapolicytotypicallykeepastockofreplacementpartsfor
thiswatchfor7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.
● Replacementparts
116 117
TOPRESERVETHEQUALITYOFYOURWATCH
TOPRESERVETHEQUALITYOFYOURWATCH
99

・Periodicinspectionandadjustment by disassembly andcleaning
(overhaul)isrecommendedapproximatelyonceevery3to4yearsinorder
tomaintainoptimalperformanceofthewatchforalongtime.
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the gasket may deteriorate,water-resistant
performancemay be impaired dueto intrusion of perspirationand
moisture.
Pleasecontact the retailerfrom whom the watchwas purchased for
inspectionand adjustment bydisassembly and cleaning(overhaul). For
replacementof parts, pleasespecify"SEIKO GENUINE PARTS." When
askingfor inspection andadjustmentby disassembly andcleaning
(overhaul),makesurethatthegasketandpushpinarealsoreplacedwith
newones.
・Whenyourwatchisinspectedandadjustedbydisassemblyandcleaning
(overhauled),themovementofyourwatchmaybereplaced.
● Inspectionandadjustmentbydisassemblyandcleaning (overhaul)
Thebrightness of theelectroluminescence(EL) panel used forthebuilt-
inilluminatinglight willdecreasewhen thebatteryvoltage becomeslow. The
brightnessoftheELpanelwillalsograduallydecreasewiththepassageoftime.
Thebrightness of the ELpanelwilldecreasebyone-half after a totalof
approximately120hoursoflighting.WhenthebrightnessoftheELpanelbecomes
toodark,firstchargethewatchsufficiently. Ifitisstilltoodarkaftercharging
the watch, replace theEL panel. Consult the retailerfrom whomthewatchwas
purchasedconcerningpanelreplacement.Afeewillbechargedforreplacement.
● Electroluminescentlight
Thenormallifeexpectancyfortheliquidpanelofthewatchisapproximately
7years.Afterthat,itmaydecreaseincontrast,becomingdifficulttoread.
Consulttheretailerfromwhomthewatchwaspurchasedconcerningpanel
replacement.Afeewillbechargedforreplacement.
● Liquidcrystalpanel
118 119
TOPRESERVETHEQUALITYOFYOURWATCH
TOPRESERVETHEQUALITYOFYOURWATCH
99
Troubleshooting
Problem Possiblecause Solution
Afterstoppage,thewatch
was charged longer than
theduration specifiedfor
"fullcharge,"butitdidnot
startoperating.
Thewatchwasexposedtoless
intenselight.
Chargethewatchinanenvironment
where sufficient light is available,
suchasoutdoorsonasunnyday.
The system inside the watch
wasunstable.
Resetthebuilt-inIC.
For details, refer to "How to
ResetBuilt-InIC"onP.122.
The watch gains or
losesoccasionally.
The watch was placed in high
orlowtemperatures.
Normal accuracy will resume
when the watch returns to
normaltemperatures.
Iftheproblempersists,consult
the retailer from whom the
watchwaspurchased.
Thetimeisonehour
ahead of or behind
thecorrecttime.(1)
Acityorregionwheretheplace
ofuseisnot locatedissetas
thehometimecity.
Check the home time city currently
set,andresetit.
To show the time of Tokyo, for
example,setTYO(Tokyo)asthehome
timecity.Fordetails,refertoP.84.
Problem Possiblecause Solution
Thetimeisonehour
ahead of or behind
thecorrecttime.(2)
DST (daylight saving time) is
setforthehometime.
IftheDSTmarkisshowntothe
left of the home time display,
DSTis setfor thehome time.
To return it to the standard
time,turnofftheDSTsetting.
Fordetails,refertoP.84.
The buttons will not
work.
The display remains
blank.
The amount of power reserve
has reduced to an extremely
lowlevel.
Refer to "Display and amount
ofpowerreserve"onP.77,and
chargethewatchsufficiently.
Thebluronthewatch
glasspersists.
Waterenteredinsidethewatch
duetoadeterioratedgasketor
foranyotherreason.
Consulttheretailerfromwhom
thewatchwaspurchased.
120 121
1010
TROUBLESHOOTING
TROUBLESHOOTING

Incasethewatchshowsanabnormaldisplay,followtheprocedurebelowtoresetthebuilt-
inIC.Thenormaldisplaywillresume.
①PressandholdButtonsⒶ,Ⓑ,ⒸandⒹsimultaneously.Whenthedisplaybecomesblank,
releaseallthebuttons.
ButtonⒸ
ButtonⒷ
ButtonⒶButtonⒹ
HowtoResetBuilt-InIC
②Thebuilt-inICisreset.

Whenthenormaldisplayappearsinsteadoftheblankdisplay,theTime/Calendardisplayof
theTime/Calendarmodeisshown.Itstartscountingfrom12:00amonJanuary1,2018.
 Tousethewatchwithanaccuratetimeindication,besuretosetthetime/calendarafter
resettingthebuilt-inIC.
※Afterthebuilt-inICisreset,thehometimedisplayshowstheJapantime(citycode:TYO),and
theworldtimedisplayshowsGMT(GreenwichMeanTime).
Specifications
1.Frequencyofcrystaloscillator···· 32,768Hz(Hz=Hertz...Cyclespersecond)
2.Loss/gain(monthlyrate)··············· Lessthan20secondsatnormaltemperaturerange(between5℃and35℃)
3.Operationaltemperaturerange···
between−10℃and+60℃(Temperaturerangefordisplayfunctionbetween0℃and＋50℃)
4.Displaysystem
Time/calendarmode·················· Date,dayoftheweek,A/P(ina12-hourformat),hour,minutesandseconds
Dualtimedisplayofhometimeandworldtime,worldtimemarkandDSTmark
(Alarmmarkandhourlytimesignalmark)
Stopwatchmode························· Measuresupto
9hours,59minutesand59seconds9in1/10-secondincrements.
 Lap/splittimes,lap/splitNo.,currenttime,andstopwatchmark
 (Alarmmarkandhourlytimesignalmark)
Recallmode·································· Totaltime,lap/splittimes,bestlaptime,averagelaptime,lap/splitNo.,memory
channelNo.,anddateofmeasurement(monthanddate)
 (Alarmmarkandhourlytimesignalmark)
Timermode··································· 
9hours,59minutesand59secondscanbesetinsecondincrements.
 Numberofrepetitions,currenttime,timermark,andgraphicdisplayofremaining
 secondsforthelast59secondsofeachcountdown
Alarmmode···································  Designatedalarmtime(hourandminutes),A/P(ina12-hourformat),"on/--"(engagement/
disengagement)mark,alarmchannel(AL1,AL2andAL3),andcurrenttime
 (Alarmmarkandhourlytimesignalmark)
SolarMonitormode···················· 
Generationlevels(11levels),amountofpowerreserve(11levels),andcurrenttime
 (Alarmmarkandhourlytimesignalmark)
5.Displaymedium································· NematicLiquidCrystal,FEM(FieldEffectMode)
6.Powersource····································· Secondarybattery,1piece
7.Durationofoperation······················ Approximately5months(withoutbeingexposedtolightafterfullcharge,under
theconditionsbelow:Illuminatinglight...once/dayfor2seconds;alarm...10
seconds/day;andPowerSave...6hours/day)
8.Illuminatinglight································ EL(Electroluminescentlight)
9.IC(IntegratedCircuit)····················· Oscillator,frequencydivideranddrivingcircuit,C-MOS-IC,1piece
※Thespecificationsabovearesubjecttochangewithoutpriornoticeforproductimprovements.
122 12 3
SPECIFICATIONS
11
10
TROUBLESHOOTING