Basic OperationsThis section provides an overview of the watchand its operations.

Note

● The illustrations included in thismanual have been created tofacilitate explanation. An illustrationmay differ somewhat from the item itrepresents.

General Guide

30

③① ②

⑧

⑨

⑩

⑦ ⑥

⑤④

A Hour hand

B Second hand

C Minute hand

D 24-hour hand

E Crown

F Day indicator

G Small minute hand

H Small hour hand

I Small 24-hour hand

J Mode hand

MA1710-EF © 2015 CASIO COMPUTER CO., LTD.

Watch Face Items

①

②

③

⑤

⑥⑦⑧⑨

④

A Day of the week

B Airplane Mode

C Stopwatch Mode

D When checking the last receive result:“P”: Last receive (acquisition) was for GPSsignal time information and positioninformation“N”: Last receive was for GPS signal timeinformation or time calibration signalWhen setting the Home City or WorldTime City:“P”: With position information“N”: Without position information

E Summer time setting

F Last GPS or time calibration signal receive(acquisition) result

G GPS signal time information reception inprogress

H GPS signal time information and positioninformation acquisition in progress

I Time calibration reception in progress

Navigating Between ModesThis watch has a Timekeeping Mode and aStopwatch Mode.You tell which mode the watch is currently inby checking the position of the mode hand.● Timekeeping Mode (normal timekeeping):

Current day of the week● Stopwatch Mode: ST (STW)

30 30

C

Stopwatch ModeTimekeeping Mode

Use the (C) button to navigate betweenmodes.● Hold down (C) for at least two seconds to

return to the Timekeeping Mode.● Holding down (C) for four seconds or longer

will enter or exit the Airplane Mode. Themode hand points to h while the watch is inthe Airplane Mode.l Using the Watch on an Aircraft

Mode OverviewTimekeeping ModeThe main hour, minute, and second handsindicate the current time.The small hour and minute hands indicate thecurrent World Time.

30

⑤⑥ ③

②

①

④

Current location time/ World Time swapping (Hold down about 3 seconds.)

Airplane Mode (Hold down about

4 seconds.)

A Current day of the week

B Current location time (24-hour time)

C Current location date

D World Time hour (24-hour time)

E World Time hour

F World Time minute

Operation Guide 5454

1

Stopwatch ModeThe main hour and minute hands indicate thecurrent time.The second hand, and the small hour andminute hands indicate the elapsed stopwatchtime.

30

③②

⑤

①

④

Airplane Mode (Hold down about

4 seconds.)

Start/Stop

Reset

A Stopwatch seconds

B Stopwatch minutes

C Stopwatch hours

D Stopwatch hours (24-hour time)

E Current location time (24-hour time)

Using the CrownDepending on the operation you want toperform, pull out the crown to the first orsecond click and then rotate it.

Normal position

Second click

First click

Crown

Important!

● To prevent loss of water resistanceand/or damage due to impact, besure to push the crown in to itsnormal position after you arefinished using it.

● When pushing the crown back in,take care not to apply too muchforce.

● Fast Forward/Fast ReverseAfter pulling out the crown to the first or secondclick, rotating it quickly in succession in eitherdirection will start a fast forward or fast reverseoperation. While a fast forward operation is inprogress, quickly rotating the crown insuccession again will increase the speed evenfurther.● The fast reverse operation speed is fixed

and cannot be changed.

● Stopping Fast Forward/Fast ReverseRotate the crown in the direction opposite thatof the ongoing operation or press any button.

Note

● If you do not perform any operationfor about two minutes after pullingout the crown, crown operations willautomatically become disabled. Ifthat happens, push the crown backin and then pull it out again.

Changing Hand and the DayIndicator Settings

30

Mode hand

Day indicator

● Mode Hand and Day IndicatorMovement

Changing the day setting of the watch will alsocause the mode hand to move.

● Day● It can take anywhere from about one minute

to three minutes for the day indicator tochange after timekeeping reachesmidnight. The mode hand moves as the dayindicator changes.

● The day may not be indicated correctly whilethe watch’s crown is pulled out.

Solar Charging

What is solar charging?This watch runs on power supplied from arechargeable (secondary) battery that ischarged by a solar panel. The solar panel isintegrated into the face of the watch, andpower is generated whenever the face isexposed to light.● This watch uses a special rechargeable

(secondary) battery.ー The watch’s battery will not charge if the

watch’s temperature is less thanapproximately -10°C (14°F) or greaterthan approximately 60°C (140°F).

ー Over-discharge will occur if the watch isnot charged within approximately threemonths after it stops operation due to lowbattery power. Charging may not bepossible after over-discharge occurs.

Charging the WatchWhen you are not wearing the watch, put it ina location where it is exposed to bright light.

While you are wearing the watch, make surethat its face (solar panel) is not blocked fromthe light by the sleeve of your clothing. Powergeneration efficiency is reduced even whenthe face of the watch is blocked only partially.

NOYES

Operation Guide 5454

2

Important!

● If the second hand stops for sometime after the watch is continuouslyexposed to light, it could mean thatcharging is not possible due to over-discharge. Request chargeable(secondary) battery replacement byyour original retailer or authorizedCASIO service center.

● Depending on light intensity andlocal conditions, the watch maybecome hot to the touch whenexposed to light for charging. Takecare to avoid burn injury aftercharging. Also, avoid charging thewatch under high-temperatureconditions like the ones describedbelow.ー On the dashboard of a vehicle

parked in the sunー Near an incandescent light bulb or

other source of heatー Under direct sunlight or in other

hot areas for long periods

Note

● Exposing the watch face to light afterthe battery goes dead will cause thesecond hand to revolvecounterclockwise until it stops atsecond 57. This indicates charginghas started.

● A fully charged watch can operatefor approximately seven monthswithout further charging. Watchoperation will stop approximately 20days after the battery goes low.

Charging Time GuidelinesThe table below shows guidelines forapproximate charging times.Required Charging Time for 1-day UseLight Intensity Approximate Charging Time

Highp

Low

A 8 minutesB 30 minutesC 48 minutesD 8 hours

Time Required to Achieve Next ChargeLevel

Light IntensityApproximate Charging TimeCharge Level

1Charge Level

2

Highp

Low

A 8 hours 38 hoursB 26 hours 143 hoursC 42 hours 232 hoursD 469 hours -

Light Intensity

A Sunny day, outdoors (50,000 lux)

B Sunny day, near a window (10,000 lux)

C Overcast day, near a window (5,000 lux)

D Indoor fluorescent lighting (500 lux)Charge Level 1 :Time from dead battery until hand movementstartsCharge Level 2 :Time from hand movement starts until a fullcharge

Note

● Actual charging time depends on thelocal charging environment.

Checking the Charge LevelThe charge level is indicated by watch handmovement. Functions become disabled asbattery power goes low.

Important!

● Should battery go low or go dead,expose the face (solar panel) to lightas soon as possible.

Immediately after pressing (C) to enter to theTimekeeping Mode, the second hand willmove to one of the positions below to indicatethe battery charge level.

● Battery Charged2 o'clock12 o'clock

● Low Battery Power4 o'clock 6 o'clock

Also, the second hand jumps at two-secondor five-second intervals.

30 30

Two-second intervals Five-second intervals

Second hand

● Above right figures indicate a lower batterycharge.

● Dead BatteryAll hands are stopped.

1

Power Saving FunctionLeaving the watch in a dark location for aboutone hour between the hours of 10 p.m. and 6a.m. will cause the second hand to stop, andthe watch will enter Level 1 power saving. Ifthe watch is left in this condition for six orseven days, all hands will stop and the watchwill enter Level 2 power saving.Level 1 :Basic timekeeping functions are operational.Level 2 :Only the day indicator is operational.

Note

● Note that the watch also may enterthe power saving state if its face isblocked from light by your sleevewhile you are wearing it.

● The watch will enter power savingfrom the Timekeeping Mode only.

● Recovering from Power SavingOperation

Press any button or place the watch in a well-lit area to recover from power saving.

Operation Guide 5454

3

Time Adjustment (GPS,Time Calibration

Signal)The watch’s time, day, and Home City (timezone) settings can be configured inaccordance with a received GPS signal ortime calibration signal.● GPS signal position information: Used to

update Home City (time zone), time, andday settings.

● GPS signal time information: Used toupdate time and day settings.

● Time calibration signal: Used to update timeand day settings.

Important!

● Before trying to receive GPS signaltime information and/or a timecalibration signal, first use GPS toacquire position information andconfigure Home Time (time zone)settings.

● Put the watch into the Airplane Modewhenever you are inside an aircraftor in any other area where radiowave reception is prohibited orrestricted.l Using the Watch on an Aircraft

Note

● Areas where time calibration signalreception is supported are limited.When the watch in an area wheretime calibration signal reception isnot supported, adjust time and daysettings based on GPS signals.l Time Calibration SignalReception Ranges

Time Adjustment Using GPS

Appropriate Signal ReceptionLocation

GPS signal reception is possible outdoorswhere the sky is visible and not blocked bybuildings, trees, or other objects.

Note

● In areas where reception is poor,keep the watch face orientedupwards and do not move the watch.

● When the watch is set up for autoreceive, take care to avoid coveringthe watch face with the sleeve ofyour clothing.

● GPS signal reception is not possiblein the areas described below.ー Where the sky is not visibleー Indoors (Reception may be

possible near a window.)ー Near wireless communication

equipment or other devices thatgenerate magnetism.

● You may experience GPS signalreception problems in the areasdescribed below.ー Where the view of the sky above

is narrowー Near trees or buildingsー Near a train station, airport, or

other congested areas

Acquiring GPS Position InformationManually

You can use a button operation to acquireGPS position information and adjust yourHome City (time zone), time, and day settingsin accordance with your current location.

Note

● GPS signal reception requires largeamounts of power. Perform it onlywhen necessary.

Getting readyThe receive operation is performed only whilethe watch is in the Timekeeping Mode (normaltimekeeping).● Normally the mode hand points to the

current day of the week.l Navigating Between Modes

30

Mode hand

1. Move to a location appropriate for signalreception and orient the watch so itsdisplay is pointed straight up at the sky.

2. Hold down (B) for at least three seconds.Release the button as soon as the secondhand points to “T+P”.

● The second hand will move in thefollowing sequence: “Y(YES)” or“N(NO)” n “T (TIME)” n “T+P”.

● This indicates that position informationacquisition has started.

30

Second hand

● If position information acquisition issuccessful, the second hand will moveto “Y(YES)” and then the watch willautomatically adjust its time and daysettings.

30

● If position information acquisition failsfor some reason, the second hand willmove to “N(NO)” and then the watch willindicate the current time and daywithout adjusting them.

Operation Guide 5454

4

Note

● Reception takes anywhere fromabout 30 seconds to about twominutes.

● It can take as long as 13 minuteswhen leap second information isincluded.

● You may experience locationinformation acquisition problemswhen you are in the vicinity of a timezone borderline.The watch’s time and day will not beindicated correctly if the Home City(Time Zone) setting is not right foryour location. Perform positioninformation acquisition in arepresentative city in your time zoneor in a location that is well within thetime zone. Or you can perform a timeinformation receive operation toadjust time and day settings afterconfiguring Home City (Time Zone)and summer time settings manually.l Selecting a Time Zonel Acquiring GPS Time InformationManually

Acquiring GPS Time InformationManually

You can use a button operation on the watchto receive GPS signal time information. Whenthe receive operation is successful, thewatch’s Home City (time zone), day, and timesettings will be adjusted accordingly.

Note

● GPS signal reception requires largeamounts of power. Perform it onlywhen necessary.

Getting readyThe receive operation is performed only whilethe watch is in the Timekeeping Mode (normaltimekeeping).● Normally the mode hand points to the

current day of the week.l Navigating Between Modes

30

Mode hand

1. Move to a location appropriate for signalreception and orient the watch so itsdisplay is pointed straight up at the sky.

2. Hold down (B) for at least one second.Release the button as soon as the secondhand points to “T (TIME)”.

● The second hand will move in thefollowing sequence: “Y(YES)” or“N(NO)” n “T(TIME)”.

● This indicates that time informationreceipt has started.

30

Second hand

● If information acquisition is successful,the second hand will move to “Y(YES)”,and then the watch will automaticallyadjust its time and day settings.

30

● If reception fails for some reason, thesecond hand will move to “N(NO)” andthen the watch will indicate the currenttime and day without adjusting them.

Note

● Reception takes anywhere fromabout seven seconds to about oneminute.

● It can take as long as 13 minuteswhen leap second information isincluded.

Auto GPS Signal ReceiveWhen the conditions below are satisfied, thewatch will automatically receive a GPS signal.If any time information receive is successful,the watch will no longer attempt to receive asignal for the rest of the day.

● Time information● Watch in the Timekeeping Mode (normal

timekeeping)● Current time is between 6:00 a.m. and 10:00

p.m.● Light (near a window on a clear day)

continually shining on the face of the watchfor about one to two minutes.

● Time calibration signal reception was notsuccessful during the previous evening.

Note

● The time information receiveoperation takes anywhere fromabout seven seconds to one minute.

● The receive operation can take aslong as 13 minutes when leapsecond information is included.

Leap Second ReceptionGPS signal reception each year on June 1 orlater and on December 1 or later also receivesleap second information.

Note

● It can take as long as 13 minutes tocomplete leap second informationreception.

● Leap second information receive isrepeated until information receipt iscomplete.

● Once leap second informationreceive is complete, the watch willnot make any attempt to receive itagain until the following June 1 orDecember 1.

Operation Guide 5454

5

Time Adjustment Using aTime Calibration Signal

Appropriate Signal ReceptionLocation

A time calibration signal can be received whilethe watch is near a window.● Keep metal objects away from the watch.● Do not move the watch.● Do not perform any operation on the watch.

6 o’clock position

Note

● You may experience time calibrationsignal reception problems in theareas described below.ー Among or near buildingsー While riding in a vehicleー Near household appliances,

office machines, mobile phones,etc.

ー On a construction site, in anairport, or any other locationwhere radio wave interferenceoccurs

ー Near high-voltage linesー In mountainous areas or behind a

mountain

Time Calibration Signal ReceptionRanges

Time calibration signal reception is supportedin the areas shown below.

● Japan Time Calibration Signal (JJY)

500 kilometers

500 kilometers

1,000 kilometers

1,000 kilometers Tokyo

FukushimaFukuoka/

Saga

● Chinese Time Calibration Signal (BPC)

500 kilometers

1,500 kilometers

Chengdu

Shangqiu

Hong Kong

Shanghai

Beijing

Changchun

● U.S. Time Calibration Signal (WWVB)

600 miles (1,000 kilometers)

2,000 miles (3,000 kilometers)

Los AngelesDenver

Fort Collins

Chicago

New York

● U.K. (MSF) and German (DCF77) TimeCalibration Signal

The Anthorn signal is receivable within this area.

500 kilometers

1,500 kilometers

MainflingenAnthorn

Note

● Even if you are within the normalreception range of a time calibrationsignal, reception may be madeimpossible by the following factors:geographic contours, weather, theseason, the time of day, wirelessnoise.

Auto Time Calibration SignalReceive

An automatic time calibration signal receiveoperation is performed and the time and daysettings are adjusted between midnight and5:00 a.m. Once a signal receive operation issuccessful, no more auto receive operationsare performed that day.The receive operation is performed only whilethe watch is in the Timekeeping Mode (normaltimekeeping).● Normally the mode hand points to the

current day of the week.l Navigating Between Modes

30

Mode hand

Place the watch near a window or some otherlocation appropriate for signal reception.● The second hand points to “RC” while time

calibration reception in progress.● When the receive operation is successful,

the time and day settings will be adjustedautomatically.

Note

● Reception takes anywhere fromabout two minutes to about 10minutes. It can take as long as 20minutes.

Operation Guide 5454

6

Checking the ReceiveOperation Result

You can use the procedure below to check theresult of the last GPS or time calibration signalreceive operation.Getting readyEnter the Timekeeping Mode.l Navigating Between Modes

1. Press (B).The second hand will move and indicatethe receive operation result.“Y (YES)”: Receive successful“N (NO)”: Receive failedThe mode hand indicates details aboutthe receive (acquisition) operation.“P”: Time information and positioninformation (GPS signal)“N”: Time information (GPS signal) or timecalibration signal

30

Second hand

2. Press (B) or do not perform any operationfor one or two seconds to return to thecurrent time.

Note

● Even if there was a successfulreceive operation, the second handwill point to “N(NO)” if you adjustedthe time setting manually.

Signal ReceptionPrecautions

● When the watch is unable to adjust its timein accordance with a calibration signal forsome reason, average timekeepingaccuracy is within ±15 seconds per month.

● Time signal reception is not possible whenany one of the conditions exists.ー While battery power is lowー While the watch is in the Airplane Mode

or Stopwatch Modeー When power saving is at Level 2 (GPS

signal reception also is not possible atLevel 1.)

ー While the crown is pulled outー While the temperature of the watch is less

than approximately -10°C (14°F) orgreater than approximately 60°C (140°F)

● Note that an internal decoding process thewatch performs after it receives a signal maycause the time setting to be slightly off (byless than one second).

● If the receive operation is successful, thetime and day settings will be adjustedautomatically in accordance with the HomeCity (time zone) and summer time settings.Summer time will not be applied correctly inthe cases described below.ー When the summer time start date and

time, end date and time, or other rules arechanged by authorities

ー When position information cannot beacquired correctly

ー When position information can beacquired, but it is wrong because thewatch is located near a time zoneboundary, etc.

● As of July 2015, China does not observesummer time. If China starts to observesummer time in the future, the timedisplayed by the watch for China may not becorrect.

Using the Watch on anAircraft

Enter the Airplane Mode when in an aircraft oranywhere else where GPS or time calibrationsignal reception is restricted.

Entering the Watch AirplaneMode

Holding down (C) for about four seconds toenter the watch’s Airplane Mode. The modehand will move to the Airplane mark.

30

Airplane mark

● Each time (C) is held down for about fourseconds, the watch enters or exits theAirplane Mode.

World TimeWorld Time lets you look up the current timein any one of 27 cities and 40 time zonesaround the globe.

30

Getting readyEnter the Timekeeping Mode.l Navigating Between Modes

Operation Guide 5454

7

Selecting a Time ZoneUse the procedure in this section to select aWorld Time city (time zone). If you are in anarea that observes summer time, you can alsoenable or disable summer time.

Note

● The initial factory default summertime setting for all cities (time zones)is “AT (AUTO)”. In many cases, the“AT (AUTO)” setting lets you use thewatch without switching betweensummer time and standard time.

1. Pull out the crown to the first click.The second hand will move to the timezone of the currently selected World TimeCity.

30

Mode hand

Time zone

Crown

Small hour handSmall minute hand

Small 24-hour hand

The mode hand indicates the acquisitionstatus for the currently selected WorldTime location.“P”: Available“N”: Not available

2. Rotate the crown to change the time zone.The small hour hand and small minutehand indicate the current time in theselected time zone.● Hold down (B) for about one second to

display UTC (Coordinated UniversalTime) time.

30

Crown

World Time hour (24-hour)

World Time hour and minute

3. Press (A) to change the summer timesetting.

● While the mode hand is pointed at “AT(AUTO)”, “STD”, or “DST”, you can holddown (A) for about one second to cyclethe summer time setting in thesequence below.“AT (AUTO)”n“STD”n“DST”

30

● “AT (AUTO)”The watch switches between standardtime and summer time automatically.

● “STD”The watch always indicates standardtime.

● “DST”The watch always indicates summertime.

4. Push the crown back in.

Note

● You cannot switch between “STD”and “DST” while “UTC” is selectedas the Home City (time zone).

Swapping Your CurrentLocation Time and WorldTime

Holding down (A) for about three seconds willswap your current location time with yourWorld Time.

30 30

n

Current location time

Current location timeWorld Time

World Time

After swappingBefore swapping

● If a swapping operation causes a change inthe day indicator setting, the mode hand willrotate repeatedly.l Changing Hand and the Day IndicatorSettings

StopwatchThe stopwatch measures elapsed time in unitsof one second up to 23 hours, 59 minutes, 59seconds (24 hours).Getting readyEnter the Stopwatch Mode.l Navigating Between Modes

30

Measuring Elapsed Time

30

Seconds

HoursMinutes

Hour (24-hour time)

1. Use the operations below to measureelapsed time.

A

A

A

A Stop

Resume

Stop

Start

2. Press (B) to reset the stopwatch.3. Press (C) once to return to the

Timekeeping Mode.

Operation Guide 5454

8

Adjusting TimeSettings Manually

You can use the procedure below to adjust thewatch’s time and day settings when GPS andtime calibration signal reception is notpossible for some reason.

Selecting a Time ZoneUse the procedure in this section to select acity (time zone) to use as your Home City. Ifyou are in an area that observes summer time,you can also enable or disable summer time.

Note

● The initial factory default summertime setting for all cities (time zones)is “AT (AUTO)”. In many cases, the“AT (AUTO)” setting lets you use thewatch without switching betweensummer time and standard time.

● In the cases described below,receiving GPS position informationwill automatically cause “AT(AUTO)” to be selected for thesummer time setting.ー When the time zone of the current

receive operation is different fromthe watch’s time zone setting priorto the receive operation.

ー When the time zone isunchanged, but the acquiredposition information is for ageographic area with differentsummer time rules (start date, enddate)

1. Pull out the crown to the second click.The second hand will move to thecurrently selected time zone.The mode hand indicates the acquisitionstatus of position information for thecurrently selected time zone.“P”: Available“N”: Not available

30

Crown

Time zone

2. Rotate the crown to change the time zone.● You can also select a time zone whose

name is not indicated on the face of thewatch.

● For information about time zones, seethe “City (Time Zone) List”.

3. To change the summer time setting, press(A).

● While the mode hand is pointed at “AT(AUTO)”, “STD”, or “DST”, you can holddown (A) for about one second to cyclethe summer time setting in thesequence below.“AT (AUTO)”n“STD”n“DST”

30

● “AT (AUTO)”The watch switches between standardtime and summer time automatically.

● “STD”The watch always indicates standardtime.

● “DST”The watch always indicates summertime.

4. Push the crown back in to its normalposition.

Summer TimeSummer time, which is also known as DaylightSaving Time (DST), advances the time settingone hour, 30 minutes, or some other amountof time from standard time (STD) during thesummer months. Whether or not and howsummer time is used depends on your countryor local area. Summer time is not used in somecountries and local areas.

Adjusting the Time and DaySetting

1. Pull out the crown to the second click.The second hand will move to thecurrently selected time zone.

30

Crown

Time zone

MinutesHours

2. Hold down (C) for about 10 seconds.This causes the second hand to move to12 o’clock, and enables the minute settingoperation.

3. Rotate the crown to change the minutesetting.

4. Press (C).The hour hand will move slightly,indicating that the hour setting operationis enabled.

5. Rotate the crown to change the hoursetting.

6. Press (C).This changes to the year settingoperation.

80

90 30

40

20

5070

10

60

00

＋

－

Year (10’s digit)

8

9

4

2

57

1

6

0

3＋

－

Year (one’s digit)

7. Rotate the crown to move the hour handto the desired setting for the year ten’sdigit, and the minute hand to the desiredone’s digit.

Operation Guide 5454

9

8. Press (C).This changes to the month settingoperation.

8

9

10

4

2

57

11 1

6

12

Month

3＋

－

9. Rotate the crown to change the month.10. Press (C).

The mode hand will move slightly,indicating that the day setting operation isenabled.

30

＋

－

Day

● Changing the date setting will cause themode hand to rotate repeatedly.l Changing Hand and the DayIndicator Settings

11. Rotate the crown to change the day.12. On a time signal at the top of a minute,

push the crown back in.

Adjusting Hand andDay Indicator

AlignmentStrong magnetism or impact can cause thetime indicated by the hands and the dayindicator to go out of alignment. If thishappens, adjust hand and day indicatoralignment.● The watch performs alignment of the hour

hand, minute hand, second hand, and 24-hour hand automatically.

Adjusting Hand and DayIndicator Alignment

1. Pull out the crown to the second click.2. Hold down (B) for about five seconds, until

the second hand moves to 12 o’clock.This will start auto alignment of the hourhand, minute hand, second hand, and 24-hour hand.● After auto alignment is complete, the

hands should be in the positions shownbelow.

30

Second hand

Minute hand Hour hand

24-hour hand

Crown

3. Press (C).Confirm that the small hour hand andsmall minute hand are stopped at 12o’clock.

30

Small minute handSmall hour hand

4. If the small hour hand and small minutehand are not at 12 o’clock, rotate thecrown to align them correctly.

5. Press (C).Confirm that the mode hand is stopped at12 o’clock, and check if the day isindicated properly.

30

Day (Operation start day)

Mode hand

6. If the mode hand or the day indicator is notin the proper position, rotate the crown tomove the mode hand to 12 o’clock and theday to the center of the indicator window.

● The movement range of the mode handand day indicator is limited when yourotate the crown. The maximum left-right movement of the mode hand is 180degrees in either direction. The dayindicator moves only slightly.

● After the mode hand and day indicatorare in the positions you want, advanceto step 9 of this procedure. If you areunable to make the adjustments youwant, go to step 7.

7. Press (C).Confirm that the day indicator shows 1.

1

Day

● Changing the date setting will cause themode hand to rotate repeatedly. Insome cases, the mode dial maycontinue to rotate for about 30 minutes.l Changing Hand and the DayIndicator Settings

8. If 1 is not shown for the day, rotate thecrown until 1 is shown for the day.

● The mode hand moves in conjunctionwith crown rotation. Move the modehand to 12 o’clock.

9. Push the crown back in.

Note

● Leaving the crown pulled out formore than approximately 30 minuteswithout performing any operationwill automatically cause theadjustment operation to becomedisabled. If this happens, push thecrown back in to its normal positionand then pull it out again to restartthe procedure from the beginning.Pushing the crown in to its normalposition part way through thealignment procedure will cause thehands to return to their normalposition. Any alignment youperformed up to that point will beapplied.

Operation Guide 5454

10

Moving To AnotherTime Zone

Use the procedure below to easily change dayand time settings of the watch to a destinationlocation.● Any time you perform a GPS signal receive

operation, the watch may try to acquire leapsecond information. A leap secondinformation receive operation can take aslong as 13 minutes. Make sure the watch issufficiently charged before performing aGPS signal receive operation after youarrive at your destination.

● Prior to Takeoff

1. Enter the watch’s Airplane Mode wheninstructed to do so by airline personnel.

30

Airplane mark

● After Arriving

1. Exit the Airplane Mode.2. Perform a GPS signal position acquisition

operation, which will adjust the watch’stime setting to your current location.

l Using the Watch on an Aircraftl Acquiring GPS Position Information

Manually

Other Information

City (Time Zone) ListA time zone for which no city name isdisplayed by the watch is indicated in the tablebelow by a hyphen (-) in the “City Code”column. The “City Name” column will containthe name of a representative city in that zone.

Citycode City Name

SecondHand

PositionUTC

Offset

UTC CoordinatedUniversal Time Second 0 0LON London Second 2 0PAR Paris Second 4 +1ATH Athens Second 6 +2JED Jeddah Second 8 +3- (Tehran) Second 9 +3.5DXB Dubai Second 10 +4- (Kabul) Second 11 +4.5- (Karachi) Second 12 +5DEL Delhi Second 13 +5.5- (Kathmandu) Second 14 +5.75DAC Dhaka Second 15 +6- (Yangon) Second 16 +6.5BKK Bangkok Second 17 +7HKG Hong Kong Second 19 +8- (Eucla) Second 21 +8.75TYO Tokyo Second 22 +9- (Adelaide) Second 23 +9.5SYD Sydney Second 24 +10- (Lord HoweIsland) Second 25 +10.5NOU Noumea Second 26 +11- (Norfolk Island) Second 27 +11.5WLG Wellington Second 28 +12- (ChathamIslands) Second 30 +12.75TBU Nuku’alofa Second 31 +13CXI Kiritimati Second 33 +14BAR Baker Island Second 36 -12PPG Pago Pago Second 38 -11HNL Honolulu Second 40 -10- (MarquesasIslands) Second 41 -9.5ANC Anchorage Second 42 -9LAX Los Angeles Second 44 -8DEN Denver Second 46 -7CHI Chicago Second 48 -6NYC New York Second 50 -5- (Caracas) Second 51 -4.5YHZ Halifax Second 52 -4- (St. John’s) Second 53 -3.5RIO Rio de Janeiro Second 54 -3FEN Fernando deNoronha Second 56 -2RAI Praia Second 58 -1● The information in the above table is current

as of July 2015.

Summer Time TableWhen “AT (AUTO)” is selected for a city thatobserves summer time, switching betweenstandard time and summer time will beperformed automatically at the timing shownin the table below.

Note

● If the summer time start and enddates for your current location havebeen changed from those indicatedin the table, you will need switchbetween “STD” and “DST” manually.

● In the case of a time zone for whichno city name is displayed, you canautomatically switch betweenstandard time and summer time byacquiring GPS position information.

City Name Summer TimeStartSummer Time

End

London 01:00, lastSunday in March02:00, lastSunday inOctober

Paris 02:00, lastSunday in March03:00, lastSunday inOctober

Athens 03:00, lastSunday in March04:00, lastSunday inOctober

Sydney02:00, firstSunday inOctober

03:00, firstSunday in April

Wellington02:00, lastSunday inSeptember

03:00, firstSunday in April

Anchorage 02:00, secondSunday in March02:00, firstSunday inNovember

LosAngeles

02:00, secondSunday in March

02:00, firstSunday inNovember

Denver 02:00, secondSunday in March02:00, firstSunday inNovember

Chicago 02:00, secondSunday in March02:00, firstSunday inNovember

New York 02:00, secondSunday in March02:00, firstSunday inNovember

Halifax 02:00, secondSunday in March02:00, firstSunday inNovember

Rio deJaneiro

00:00, thirdSunday inOctober

00:00, thirdSunday inFebruary or00:00, fourthSunday inFebruary

● The information in the above table is currentas of July 2015.

Map Data SourceThis watch uses the map database of TokyoCartographic Co., Ltd.

Operation Guide 5454

11

Function Limitations● How temperature affects watch

functionsThis functions below are disabled while thetemperature of the watch is less thanapproximately -10°C (14°F) or greater thanapproximately 60°C (140°F).● GPS signal and time calibration signal

receive operation● Solar charging● Hand and day indicator alignment

adjustment

Troubleshooting

Signal Reception (GPS)

Q1 The watch cannot perform a receiveoperation.

Is the watch’s battery charged?Signal reception is not possible whilebattery power is low. Keep the watchexposed to light until it rechargessufficiently.l Charging the Watch

Is the watch in the Timekeeping Mode (notAirplane Mode)?

Signal reception is possible only while thewatch is in the Timekeeping Mode (notAirplane Mode).l Navigating Between Modes

After checking the above, the watch stillcannot perform a receive operation.

GPS signal reception is not possibleunder the conditions described below.● During power saving● While the crown is pulled out● While the watch temperature is less

than approximately -10°C (14°F) ormore than approximately 60°C (140°F)

Q2 The second hand remains at “T+P” or“T(TIME)” during the signal receiveoperation.

The watch may be receiving leap secondinformation.l Leap Second Reception

Q3 The signal receive operation alwaysfails.

Is the watch in a location that is appropriatefor signal reception?

Check your surroundings and move thewatch to a location where signal receptionis better.l Appropriate Signal Reception Location

Is the face of the watch pointed straightupwards at the sky?

Minimize movement of the watch while thereceive operation is in progress.When the watch is set up for auto receive,take care to avoid covering the watch facewith the sleeve of your clothing.

Q4 Signal reception should have beensuccessful, but the watch’s time and/or day is wrong.

Is your Home City (time zone) settingcorrect for your location?

Change your Home City (time zone)setting so it correctly indicates yourlocation.l Acquiring GPS Position InformationManuallyl Selecting a Time Zone

Do the hand and/or day indicator look outof alignment?

Correct hand and day indicator alignment.l Adjusting Hand and Day IndicatorAlignment

After checking the above, the time and/orday settings is still wrong.

Adjust time and day settings manually.

Signal Reception (TimeCalibration Signal)

Q1 The watch cannot perform a receiveoperation.

Is the watch’s battery charged?Signal reception is not possible whilebattery power is low. Keep the watchexposed to light until it rechargessufficiently.l Charging the Watch

Is the watch in the Timekeeping Mode (notAirplane Mode)?

Signal reception is possible only while thewatch is in the Timekeeping Mode (notAirplane Mode).l Navigating Between Modes

Is your Home City (time zone) settingcorrect for your location?

The watch will not indicate the correct timeif the Home City (time zone) setting iswrong. Change your Home City (timezone) setting so it correctly indicates yourlocation.l Acquiring GPS Position InformationManuallyl Selecting a Time Zone

After checking the above, the watch stillcannot perform a receive operation.

Time calibration signal reception is notpossible under the conditions describedbelow.● When watch is at Level 2 power saving● When the crown is pulled out● While the watch temperature is less

than approximately -10°C (14°F) ormore than approximately 60°C (140°F)

If successful reception is not possible forsome reason, you can adjust the time andday settings manually.

Operation Guide 5454

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Q2 The signal receive operation alwaysfails.

Is the watch in a location that is appropriatefor signal reception?

Check your surroundings and move thewatch to a location where signal receptionis better.l Appropriate Signal Reception Location

Did you avoid touching the watch while thereceive operation was in progress?

Minimize movement of the watch and donot perform any watch operation while areceive operation is in progress.

Is the signal transmitter in your areatransmitting a signal?

The transmitter of the time calibration maynot be transmitting a signal.Try again later.

Q3 Signal reception should have beensuccessful, but the watch’s time and/or day is wrong.

Do the hand and/or day indicator look outof alignment?

Correct hand and day indicator alignment.l Adjusting Hand and Day IndicatorAlignment

After checking the above, the time and/orday settings is still wrong.

Adjust time and day settings manually.l Adjusting Time Settings Manually

Hand Movement andIndications

Q1 I don’t know what mode the watch isin.

Hold down (C) for at least two seconds toreturn to the Timekeeping Mode.● Take care not to hold down (C) too long.

Holding down (C) for about four seconds willenter or exit the Airplane Mode.l Navigating Between Modes

30

Q2 The second hand is jumping at two-second or five-second intervals.

Battery power is low. Keep the watch exposedto light until it recharges sufficiently.l Charging the Watch

Q3 All hands are stopped and buttons donot work.

The battery is dead. Keep the watch exposedto light until it recharges sufficiently.l Charging the Watch

Q4 The hands suddenly start moving athigh speed.

This is due to one of the reasons below, anddoes not indicate malfunction. Simply waituntil normal hand movement resumes.● The watch is recovering from a power

saving state.l Power Saving Function● The hands are moving to their new positions

following a GPS signal or time calibrationsignal receive operation.l Time Adjustment (GPS, Time CalibrationSignal)

Q5 Hands are stopped and buttons donot work.

The watch is in the charge recovery mode.Wait until the recovery process is complete(for about 15 minutes). The watch will recovermore quickly if you place it in a brightly litlocation.

Q6 Why is the current time indicated bythe watch is off by a large amount oftime (nine hours, three hours and 15minutes, etc.)?

The city (time zone) setting is not correct.Select the correct setting.l Acquiring GPS Position InformationManuallyl Selecting a Time Zone

Q7 The current time indicated by thewatch is off by one hour or 30minutes.

The summer time setting is not correct. Selectthe correct setting.l Acquiring GPS Position InformationManuallyl Selecting a Time Zone

Q8 Hands and/or the day indicator is outof alignment.

Strong magnetism or impact may cause thehands of the watch to go out of alignment.Correct hand position alignment.l Adjusting Hand and Day IndicatorAlignment

Crown Operations

Q1 Nothing happens when I rotate thecrown.

If you do not perform any operation for abouttwo minutes after pulling out the crown(approximately 30 minutes in the case of handand day indicator alignment operations),crown operations will automatically becomedisabled. Push the crown back in to its normalposition and then pull it out again.l Using the Crown

Operation Guide 5454

13

Basic OperationsGeneral GuideWatch Face ItemsNavigating Between ModesMode OverviewUsing the CrownChanging Hand and the Day Indicator SettingsSolar ChargingWhat is solar charging?Charging the WatchCharging Time GuidelinesChecking the Charge LevelPower Saving Function

Time Adjustment (GPS, Time Calibration Signal)Time Adjustment Using GPSAppropriate Signal Reception LocationAcquiring GPS Position Information ManuallyAcquiring GPS Time Information ManuallyAuto GPS Signal ReceiveLeap Second Reception

Time Adjustment Using a Time Calibration SignalAppropriate Signal Reception LocationTime Calibration Signal Reception RangesAuto Time Calibration Signal Receive

Checking the Receive Operation ResultSignal Reception Precautions

Using the Watch on an AircraftEntering the Watch Airplane Mode

World TimeSelecting a Time ZoneSwapping Your Current Location Time and World Time

StopwatchMeasuring Elapsed Time

Adjusting Time Settings ManuallySelecting a Time ZoneSummer TimeAdjusting the Time and Day Setting

Adjusting Hand and Day Indicator AlignmentAdjusting Hand and Day Indicator Alignment

Moving To Another Time ZoneOther InformationCity (Time Zone) ListSummer Time TableMap Data SourceFunction Limitations

Troubleshooting