MO0905-EA

Operation Guide 4319

Getting Acquainted

Congratulations upon your selection of this CASIO watch. To get the most out of your purchase, read this manual carefully.

Expose the watch to bright light to charge its battery before using it.

You can use this watch even as its battery is being charged by exposure to bright light.

• Read “Power Supply” of this manual for important information you need to know when exposing the watch to bright light.

Keep the watch exposed to bright light

l l

Bright Light l l

Solar cell l l l l

The electricity generated by the solar cell of the watch is stored by a built-in battery. Leaving or using the watch where it is not exposed to light causes the battery to run down. Make sure the watch is exposed to light as much as possible.

• When you are not wearing the watch on your wrist, position the face so it is pointed at a source of bright light.

• You should try to keep the watch outside of your sleeve as much as possible. Charging is reduced significantly if the face is only partially covered.

• The watch continues to operate, even when it is not exposed to light. Leaving the watch in the dark can cause the battery to run down, which will result in some watch functions to be disabled. If the battery goes dead, you will have to re-configure watch settings after recharging. To ensure normal watch operation, keep it exposed to light as much as possible.

Battery charges in the light.

Battery discharges in the dark.

Solar cell

(Converts light to electrical power.)

Bright Light

Electrical energy

LEVEL 1

LEVEL 2

LEVEL 3

Charge

LEVEL 4

All functions enabled

Rechargeable battery

Discharge

LEVEL 1

LEVEL 2

LEVEL 3

LEVEL 4

Some or all functions disabled

General Guide

• Press C to change from mode to mode.

• In any mode, press B to illuminate the face of the watch.

Battery Level Indicator

Timekeeping Mode

Press C.

• The actual level at which some functions are disabled depends on the watch model.

• Be sure to read “Power Supply” for important information you need to know when exposing the watch to bright light.

If the display of the watch is blank...

If the display of the watch is blank, it means that the watch’s Power Saving function has turned off the display to conserve power.

• See “Power Saving Function” for more information.

Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or loss suffered by you or any third party arising through the use of this product or its malfunction.

About This Manual

• Button operations are indicated using the letters shown in the illustration.

• Each section of this manual provides you with the information you need to perform operations in each mode. Further details and technical information can be found in the “Reference” section.

World Time Mode Alarm Mode

Hand Setting Mode Stopwatch Mode

Radio-controlled Timekeeping

Hour hand

Minute hand

This watch receives a time calibration signal and updates its time setting accordingly. The time calibration signal includes both Standard Time and Daylight Saving Time

(summer time) data.

• This watch is designed to pick up the time calibration signals transmitted from Fort Collins, Colorado in the

United States, and from Fukushima and Fukuoka/Saga in Japan.

Day of week

Day

Second hand

Current Time Setting

This watch adjusts its time setting automatically in accordance with a time calibration signal. You can also perform a manual procedure to set the time and date, when necessary.

• The first thing you should do after purchasing this watch is to set your Home City, which is the city where you normally will use the watch. For more information, see

“To set your Home City” below.

• When using the watch in an area that is outside the ranges of its time calibration signal reception, you need to adjust the time and date as required manually. See

“Timekeeping” for details about manual settings.

• The analog time of this watch is synchronized with the digital time. Because of this, the analog time setting is adjusted automatically whenever you change the digital setting. See “Analog Timekeeping” for more information.

To set your Home City l l ll l l l ll ll l l l l ll ll ll

City code

1. In the Timekeeping Mode, hold down A until the city code starts to flash, which indicates the setting screen.

• The second hand will move at high speed to the 12 o’clock position, where it will stop.

2. Use D (east) and B (west) to select the city code you want to use as your Home City.

• The following are the city codes for time zones that support time calibration reception.

HKG : Hong Kong

SEL : Seoul

TYO : Tokyo

HNL : Honolulu

ANC : Anchorage

LAX : Los Angeles

DEN : Denver

CHI : Chicago

NYC : New York

3. Press A to exit the setting screen.

• The second hand will advance at high speed to the correct position in accordance with seconds count of the digital time, and resume normal movement from there.

• Normally, your watch should show the correct time as soon as you select your Home

City code. If it does not, it should adjust automatically after the next auto receive (in the middle of the night). You can also perform manual receive or you can set the time manually.

• If you are in an area that does not use Daylight Saving Time (summer time), turn off the DST setting.

• The watch will receive the time calibration signal automatically from the applicable transmitter (in the middle of the night) and update its settings accordingly. For information about the relationship between city codes and transmitters, see

“Transmitters”.

To display the digital time and last signal screen

• In the Timekeeping Mode, press D to display the last signal screen. The last signal screen shows the date and time of the last successful time calibration signal reception.

• In the Timekeeping Mode, press A to cycle through the digital time screens as shown below.

Date Screen

Day

Receiving indicator

Press A.

Receiving

Indicator and

Seconds Count

Seconds

▲ ▲

A

Current Time

Screen

Day of week Or

A

Hour :

Minutes

PM indicator

Press D.

▲

▲

Reception date

2 seconds

2 seconds

Reception Time

Last Signal Screen

2 seconds

1

Operation Guide 4319

Time Calibration Signal Reception

There are two different methods you can use to receive the time calibration signal: auto receive and manual receive.

• Auto Receive

With auto receive, the watch receives the time calibration signal automatically up to six times a day. When any auto receive is successful, the remaining auto receive operations are not performed. For more information, see “About Auto Receive”.

• Manual Receive

Manual receive lets you start time calibration signal reception with the press of a button. For more information, see “To perform manual receive”.

Important!

• When getting ready to receive the time calibration signal, position the watch as shown in the nearby illustration, with its 12 o’clock side facing towards a window.

Make sure there are no metal objects nearby.

12 o’clock or

• Make sure the watch is facing the right way.

• Proper signal reception can be difficult or even impossible under the conditions listed below.

Inside or among buildings

Inside a vehicle

Near household appliances, office equipment, or a mobile phone

Near a construction site, airport, or other sources of electrical noise

Near hightension power lines

Among or behind mountains

• Signal reception normally is better at night than during the day.

• Time calibration signal reception takes from two to seven minutes, but in some cases it can take as long as 14 minutes. Take care that you do not perform any button operations or move the watch during this time.

Reception Ranges

U.S. Signal

2,000 miles

(3,000 kilometers)

Japan Signals

500 kilometers

Fukushima

1,000 kilometers

600 miles

(1,000 kilometers)

Fort Collins

500 kilometers

Fukuoka/Saga

1,000 kilometers

Signal reception may not be possible at the distances noted below during certain times of the year or day. Radio interference may also cause problems with reception.

Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)

Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)

• Even when the watch is within the reception range of the transmitter, signal reception will be impossible if the signal is blocked by mountains or other geological formations between the watch and signal source.

• Signal reception is affected by weather, atmospheric conditions, and seasonal changes.

• See the information under “Signal Reception Troubleshooting” if you experience problems with time calibration signal reception.

About Auto Receive

With auto receive, the watch receives the time calibration signal automatically up to six times a day. When any auto receive is successful, the remaining auto receive operations are not performed. The start times of the auto receive operations depend on the current Home City and DST settings.

Home City: HKG , SEL , TYO , HNL , ANC , LAX , DEN , CHI , NYC

Standard Time Auto Receive Times:

Midnight, 1:00 a.m., 2:00 a.m., 3:00 a.m., 4:00 a.m., 5:00 a.m.

DST Auto Receive Times:

Midnight, 1:00 a.m., 2:00 a.m., 3:00 a.m., 4:00 a.m., 5:00 a.m.

Note

• Auto receive is performed only if the watch is in the Timekeeping Mode or World

Time Mode when one of the calibration times is reached. It is not performed if a calibration time is reached while an alarm is sounding, or while you are configuring settings (while settings are flashing on the display).

• When a reception time is reached, the second hand stops at 12 o’clock and reception starts. The second hand remains stopped until reception is complete.

• Auto receive of the calibration signal is designed to be performed early in the morning, while you sleep (provided that the Timekeeping Mode time is set correctly).

Before going to bed for the night, remove the watch from your wrist, and put it in a location where it can receive the signal easily.

• When auto receive is turned on, the watch receives the calibration signal for two to seven minutes everyday when the time in the Timekeeping Mode reaches each of the calibration times. Do not perform any button operation within seven minutes before or after any one of the calibration times. Doing so can interfere with correct calibration.

• Remember that reception of the calibration signal depends on the time kept in the

Timekeeping Mode. The receive operation will be performed whenever the display shows any one of the calibration times, regardless of whether or not the

Timekeeping Mode time actually is the correct time.

About the Receiving Indicator

The receiving indicator shows the strength of the calibration signal being received. For best reception, keep the watch in a location where signal strength is strongest.

Receiving indicator

Weak

(Level 1)

Strong

(Level 4)

• Even in an area where signal strength is strong, it takes about 10 seconds for signal reception to stabilize enough for the receiving indicator to indicate signal strength.

• Use the receiving indicator as a guide for checking signal strength and for finding the best location for the watch during signal reception.

• The Level 4 receiving indicator indicates that at least one of the auto calibration signal receive operations was successful. Note, however, that the Level 4 receiving indicator is cleared from the display at the first auto receive time of the following day.

• The Level 4 receiving indicator appears on the Timekeeping Mode’s Receiving

Indicator and Seconds Count screen only. The Level 4 receiving indicator is not displayed if signal reception was unsuccessful or after manual adjustment of the current time setting.

To perform manual receive

1. Place the watch on a stable surface so its 12 o’clock

Receiving indicator side is facing towards a window.

2. In the Timekeeping Mode, hold down D for about two l l ll l l ll l l l ll seconds until the watch beeps.

3. Release D and RC flashes to indicate that signal reception has started.

• When reception starts, the second hand will move at high speed to the 12 o’clock position where it will stop until reception is complete.

• Time calibration signal reception normally takes from two to seven minutes, but in some cases it can take as long as 14 minutes. Take care that you do not perform any button operations or move the watch during this time.

• After signal reception is complete, the display of the watch changes to the last signal screen.

Note

• To interrupt reception and return to the Timekeeping Mode, press D.

• If reception is unsuccessful, the message

ERR appears on the display for about one or two minutes. After that, the watch returns to the Timekeeping Mode.

• You can also change from the last signal or

ERR screen to the normal timekeeping screen by pressing D.

To turn auto receive on and off

1. In the Timekeeping Mode, press D to display the Last

On/Off status l l ll l l ll l l l ll

Signal screen.

2. Hold down A until the current auto receive setting ( ON or OF ) starts to flash. This is the setting screen.

• The second hand will move at high speed to the 12 o’clock position, where it will stop.

• Note that the setting screen will not appear if the currently selected Home City is one that does not support time calibration reception.

3. Press D to toggle auto receive on ( ON ) and off ( OF ).

4. Press A to exit the setting screen.

• The second hand will advance at high speed to the correct position in accordance with the digital time seconds count, and resume normal movement from there.

• For information about city codes that support signal reception, see “To set your

Home City”

Signal Reception Troubleshooting

Check the following points whenever you experience problems with signal reception.

Problem

Cannot perform manual receive.

Auto receive is turned on, but the Level 4 receiving indicator does not appear on the Timekeeping

Mode display.

Time setting is incorrect following signal reception.

Probable Cause

• The watch is not in the Timekeeping

Mode.

• Your current Home City is not one of the following city codes: HNL, ANC, LAX,

DEN, CHI, NYC, HKG, SEL or TYO.

• You changed the time setting manually.

• The watch was not in the Timekeeping or World Time Mode, or you were performing some button operation during auto receive.

• Even if reception is successful, the

Level 4 receiving indicator disappears each day when the first auto receive operation of the day is performed.

• Time data (hour, minutes, seconds) only was received during the last reception.

The Level 4 receiving indicator appears only when time data and date data

(year, month, day) are both received.

• If the time is one hour off, the DST setting may be incorrect.

• The Home City code setting is not correct for the area where you are using the watch.

What you should do

• Enter the Timekeeping Mode and try again.

• Select HNL, ANC, LAX,

DEN, CHI, NYC, HKG, SEL or TYO as your Home City.

• Perform manual receive or wait until the next auto receive is performed.

• Check that the watch is in a location where it can receive the signal.

• Change the DST setting to

Auto DST.

• Select the correct Home City code.

• For further information, see “Important!” under “Time Calibration Signal Reception” and “Radio-controlled Timekeeping Precautions”.

2

World Time

City Code llll

Current time in the selected city code

The World Time Mode digitally displays the current time in 30 cities (29 time zones) around the world.

• Pressing A in the World Time Mode causes the applicable city code to appear on the digital display for about two seconds.

• If the current time shown for a city is wrong, check your

Home City time settings and make the necessary changes.

• The watch will perform a signal reception even if it is in the World Time Mode when a calibration time is reached. If this happens, the World Time Mode time settings will be adjusted in accordance with the

Timekeeping Mode’s Home City time.

• All of the operations in this section are performed in the

World Time Mode, which you enter by pressing C.

To view the time in another city

While in the World Time Mode, press D to scroll through the city codes (time zones).

• For full information on city codes, see “City Code Table”.

To toggle a city code time between Standard Time and Daylight Saving Time

1. In the World Time Mode, use D to display the city

DST indicator code (time zone) whose Standard Time/Daylight

Saving Time setting you want to change.

• Pressing A in the World Time Mode causes the applicable city code to appear on the digital display for about two seconds.

2. Hold down A to toggle Daylight Saving Time (DST indicator displayed) and Standard Time (DST indicator not displayed).

• Note that you cannot use the World Time Mode to change the DST setting of the Home City code you currently have selected in the Timekeeping Mode. See for information about turning the Home City code DST setting on and off.

• The DST indicator will appear on the display whenever you display a city code for which Daylight Saving Time is turned on.

• Note that you cannot switch between Standard Time and Daylight Saving Time while GMT is selected as the city code.

• Note that the DST/Standard Time setting affects only the currently displayed city code. Other city codes are not affected.

Alarms

On/Off status

Alarm number

Alternate at two-second interval

You can set three independent Daily Alarms. When an alarm is turned on, the alarm tone sounds when the alarm time is reached. You can also turn on an Hourly Time

Signal that causes the watch to beep twice every hour on the hour.

• The alarm and Hourly Time Signal operate in accordance with the current digital time.

• The alarm number (AL1 though AL3) indicates an alarm screen. SIG appears in place of the alarm number when the Hourly Time Signal screen is shown.

• All of the operations in this section are performed in the

Alarm Mode, which you enter by pressing C.

Alarm time

(Hour : Minutes)

To set an alarm time

1. In the Alarm Mode, press D to select the alarm (AL1,

AL2, AL3) whose time you want to set.

AL1 AL2 AL3 SIG

On/Off status

2. Hold down A until the hour setting of the alarm time starts to flash, which indicates the setting screen.

• This turns on the alarm automatically.

3. Press C to move the flashing between the hour and minute settings.

4. While a setting is flashing, use D (+) and B (–) to change it.

• When setting the alarm time using the 12-hour format, take care to set the time correctly as a.m. (no indicator) or p.m. (P indicator).

• If you have 24-hour timekeeping selected in the Timekeeping Mode, the alarm time is also displayed in 24-hour format.

5. Press A to exit the setting screen.

Alarm Operation

The alarm sounds in all modes at the preset time for about 10 seconds, or until you stop it by pressing any button.

To test the alarm

In the Alarm Mode, hold down D to sound the alarm.

To turn an alarm and the Hourly Time Signal on and off

1. In the Alarm Mode, press D to select an alarm or the Hourly Time Signal.

2. When the alarm or the Hourly Time Signal you want to set is selected, press A to turn it on ( ON ) and off ( OF ).

Operation Guide 4319

Stopwatch

Seconds

1/100 second

More than one minute

The stopwatch lets you measure elapsed time, split times, and two finishes.

• The display range of the stopwatch is 99 minutes, 59.99

seconds.

• The 1/100-second value appears while the elapsed time operation is stopped or while a split time is frozen on the display.

Elapsed Time Screen

Elapsed time

(Minutes : Seconds)

1/100 second

Minutes Seconds

Split Time Screen

Split indicator

Split time

(Minutes : Seconds) ll lll lll

1/100 second

• The stopwatch continues to run, restarting from zero after it reaches its limit, until you stop it.

• Exiting the Stopwatch Mode while a split time is frozen on the display clears the split time and returns to elapsed time measurement.

• The stopwatch measurement operation continues even if you exit the Stopwatch

Mode.

• All of the operations in this section are performed in the Stopwatch Mode, which you enter by pressing C.

To measure times with the stopwatch

Elapsed Time

D

Start

Split Time

D

Start

➤

➤

D

Stop

A

Split

➤

➤

D

Re-start

A

Split release

➤

➤

D

Stop

D

Stop

➤

➤

A

Clear

A

Clear

Two Finishes

D

Start

➤ A

Split

First runner finishes.

Display time of first runner.

➤ D

Stop

Second runner finishes.

➤ A

Split release

Display time of second runner.

➤ A

Clear

Timekeeping

Use the Timekeeping Mode to set and view the current time and date. This section also explains how to set the current date and time manually.

• In the Timekeeping Mode, press D to display the last signal screen. The last signal screen shows the date and time of the last successful time calibration signal reception.

• In the Timekeeping Mode, press A to cycle through the digital time screens as shown below.

• All of the operations in this section are performed in the Timekeeping Mode, which you can enter by pressing C.

You can select either Japanese (kanji) or English for the day of the week indicator.

• For more information, see “To set the current digital time and date manually”.

Day of the Week Indicators

Sunday: SU/ Monday: MO/ Tuesday: TU/ Wednesday: WE/ Thursday: TH/

Friday: FR/ Saturday: SA/

Date Screen

Day

Receiving indicator

Day of week Or

▲

Press A.

Receiving

Indicator and

Seconds Count

A

Current Time

Screen

▲

A

Seconds

Hour :

Minutes

PM indicator

Press D.

▲

▲

Reception date

2 seconds

2 seconds

Reception Time

Last Signal Screen

2 seconds

Setting the Digital Time and Date Manually

Make sure you select your Home City code before you change the current time and date settings. World Time Mode times are all displayed in accordance with the

Timekeeping Mode settings. Because of this, World Time Mode times will not be correct if you do not select the proper Home City code before setting the time and date in the Timekeeping Mode.

To set the current digital time and date manually

1. In the Timekeeping Mode, hold down A until the city l l ll l l l ll ll l l l l ll ll ll code starts to flash, which indicates the setting screen.

• The second hand will move at high speed to the 12 o’clock position, where it will stop.

2. Use C to move the flashing in the sequence shown below to select other settings.

City code City Code

Power

Saving

DST

Language

12/24-Hour

Format

Day Month

Seconds

Year

Hour

Minutes

3

Operation Guide 4319

3. When the setting you want to change is flashing, use B and/or D to change it as described below.

Screen: To do this:

Change the city code

Do this:

Use D (east) and B (west).

Toggle between Daylight Saving Time

( ON ) , Standard Time ( OF ), or Auto

DST ( A )

) and Toggle between 12-hour (

24-hour ( ) timekeeping

Reset the seconds to

Press D.

Press D.

Press D.

Change the hour or minutes Use D (+) and B (–).

Change the year Use D (+) and B (–).

Change the month or day Use D (+) and B (–).

Toggle the day of the week language between japanese (kanji) and English

Press D.

• See “City Code Table” for a complete list of available city codes.

• For details about configuring settings for the Power Saving feature, see “Power

Saving Function”.

4. Press A to exit the setting screen.

• The second hand will advance at high speed to the correct position in accordance with the digital time seconds count, and resume normal movement from there.

• When you exit the setting screen, the analog hands are adjusted automatically to match the digital time. See “Analog Timekeeping” for more information.

Note

• Auto DST (

A ) can be selected only while HKG , SEL , TYO , HNL , ANC , LAX ,

DEN , CHI , or NYC is selected as the Home City code. For more information, see

“Daylight Saving Time (DST)” below.

Daylight Saving Time (DST)

Daylight Saving Time (summer time) advances the time setting by one hour from

Standard Time. Remember that not all countries or even local areas use Daylight

Saving Time.

The time calibration signals transmitted from Fort Collins (United States) and from

Fukushima and Fukuoka/Saga (Japan) include both standard time and summer time

(DST) data. When the Auto DST setting is turned on, the watch switches between

Standard Time and DST (summer time) automatically in accordance with the received time signal.

• Auto DST (

A ) can be selected only while HKG , SEL , TYO , HNL , ANC , LAX ,

DEN , CHI , or NYC is selected as the Home City code.

• The default DST setting is Auto DST (

A ) whenever you select HKG , SEL , TYO ,

HNL , ANC , LAX , DEN , CHI , or NYC as your Home City code.

• If you experience problems receiving the time calibration signal in your area, it is probably best to switch between Standard Time and Daylight Saving Time (summer time) manually.

To change the Daylight Saving Time (summer time) setting

1. In the Timekeeping Mode, hold down A until the city

DST indicator code starts to flash, which indicates the setting screen.

2. Press C to display the DST setting screen.

3. Use D to cycle through the DST settings in the sequence shown below.

Auto DST ( A ) DST off ( OF ) DST on ( ON )

4. When the setting you want is selected, press A to exit the setting screen.

• The DST indicator appears on the display to indicate that Daylight Saving Time is turned on.

Analog Timekeeping

The analog time of this watch is synchronized with the digital time. The analog time setting is adjusted automatically whenever you change the digital time.

Note

• The hands for the analog timepiece move to adjust to a new setting whenever any of the following occurs.

When you change the digital time setting manually

When the digital time setting is changed by time calibration signal reception

When you change the Home City code and/or DST setting

• If the analog time does not match the digital time for any reason, use the procedure described under “To adjust the analog time” to match the analog setting to the digital setting.

• Whenever you need to adjust both the digital and the analog time settings manually, make sure you adjust the digital setting first.

• Depending on how much the hands have to move in order to adjust to the digital time, it may take some time before they stop moving.

To adjust the analog time

1. In the Timekeeping Mode, press C five times to enter the Hand Setting Mode.

2. Hold down A until starts to flash, which indicates the setting screen.

• The second hand will move at high speed to the 12 o’clock position, where it will stop.

3. If the second hand is not pointing precisely at 12 o’clock at this time, use D to adjust its position.

• Each press of D causes the second hand to advance by one second.

4. Press C. This will cause the time on the digital display to flash, which indicates that adjustment of hour and minute hands is selected.

5. Use D and B to adjust the analog setting as described below.

When you want to do this:

Move the hand setting forward 10 seconds

Perform this button operation:

• Press D.

• Press B.

Move the hand setting back

10 seconds

Move the hand setting a short way forward at high speed

Move the hand setting a short way back at high speed

Move the hand setting a long way forward at high speed

Move the hand setting a long way back at high speed

• Hold down D.

• Release D when the hands reach the setting you want.

• Hold down B.

• Release B when the hands reach the setting you want.

• While holding down D to move the hands at high-speed, press B to lock the high-speed hand movement.

• To stop the hand movement, press any button.

• Hand movement stops automatically if the hour hand makes one full (12-hour) revolution.

• While holding down B to move the hands at high-speed, press D to lock the high-speed hand movement.

• To stop the hand movement, press any button.

• Hand movement stops automatically if the hour hand makes one full (12-hour) revolution.

6. Press A to exit the setting screen.

• The minute hand will be adjusted slightly to match the seconds when you exit the setting screen.

• To return to the Timekeeping Mode, press C.

Power Supply

This watch is equipped with a solar cell and a special rechargeable battery (secondary battery) that is charged by the electrical power produced by the solar cell. The illustration shown below shows how you should position the watch for charging.

Example: Orient the watch so its face is pointing at a light source.

• The illustration shows how to position a watch with a resin band.

• Note that charging efficiency drops when any part of the solar cell is blocked by clothing, etc.

• You should try to keep the watch outside of your sleeve as much as possible. Charging is reduced significantly if the face is only partially covered.

Solar cell

Important!

• Storing the watch for long periods in an area where there is no light or wearing it in such a way that it is blocked from exposure to light can cause rechargeable battery power to run down. Make sure that the watch is exposed to bright light whenever possible.

• This watch uses a special rechargeable battery to store power produced by the solar cell, so regular battery replacement is not required. However, after very long use, the rechargeable battery may lose its ability to achieve a full charge. If you experience problems getting the special rechargeable battery to charge fully, contact your dealer or CASIO distributor about having it replaced.

• Never try to remove or replace the watch’s special battery yourself. Use of the wrong type of battery can damage the watch.

• The current time and all other settings return to their initial factory defaults whenever battery power drops to Level 5 and when you have the battery replaced.

• Turn on the watch’s Power Saving function and keep it in an area normally exposed to bright light when storing it for long periods. This helps to keep the rechargeable battery from going dead.

To check the current battery level

In the Timekeeping Mode, press C to display the battery level indicator.

Battery level indicator

• The battery level indicator shows you the current power level of the rechargeable battery.

Level Battery Level Indicator Function Status

1 All functions enabled.

2 All functions enabled.

3

(Charge Soon Alert) ll ll ll

Alarm, hourly time signal, illumination and time calibration signal reception disabled.

4 All functions disabled.

(Charge Soon Alert)

5

All functions, including timekeeping, disabled and initialized.

• The

indicator at Level 3 and the flashing charge indicator (C) at Level 4 tell you that battery power is very low, and that exposure to bright light for charging is required as soon as possible.

4

Operation Guide 4319

• At Level 5, all functions are disabled and settings return to their initial factory defaults. Functions are enabled once again after the rechargeable battery is charged, but you need to set the time and date, after the battery reaches Level 4

(indicated by the flashing charge indicator (C)) from Level 5. You will not be able to configure any of the other settings until the battery reaches Level 2 (no charge indicator) after dropping to Level 5.

• Leaving the watch in direct sunlight or some other very strong light source can cause the battery level indicator to show a reading that is momentarily higher than the actual battery level. The correct battery level indicator should appear after a few minutes.

• If you use the illumination or alarms a number of times during a short period, the hands of the watch will stop. Battery Level Indicator will show R at this time. Also, the following operations will become disabled until battery power recovers.

Illumination

Beeper tone

Time calibration signal reception

After some time, battery power will recover and the above functions will be enabled again.

Charging Precautions

Certain charging conditions can cause the watch to become very hot. Avoid leaving the watch in the areas described below whenever charging its rechargeable battery.

Also note that allowing the watch to become very hot can cause its liquid crystal display to black out. The appearance of the LCD should become normal again when the watch returns to a lower temperature.

Warning!

Leaving the watch in bright light to charge its rechargeable battery can cause it to become quite hot. Take care when handling the watch to avoid burn injury.

The watch can become particularly hot when exposed to the following conditions for long periods.

• On the dashboard of a car parked in direct sunlight

• Too close to an incandescent lamp

• Under direct sunlight

Charging Guide

After a full charge, timekeeping remains enabled for up to about 6 months.

• The following table shows the amount of time the watch needs to be exposed to light each day in order to generate enough power for normal daily operations.

Exposure Level (Brightness)

Outdoor Sunlight (50,000 lux)

Approximate Exposure Time

8 minutes

Sunlight Through a Window (10,000 lux)

Daylight Through a Window on a Cloudy Day

(5,000 lux)

Indoor Fluorescent Lighting (500 lux)

27 minutes

43 minutes

8 hours

• For details about the battery operating time and daily operating conditions, see the

“Power Supply” section of the Specifications.

• Stable operation is promoted by frequent exposure to light.

Recovery Times

The table below shows the amount exposure that is required to take the battery from one level to the next.

Exposure Level

(Brightness)

Approximate Exposure Time

Level 5 Level 4 Level 3 Level 2 Level 1

Outdoor Sunlight

(50,000 lux)

Sunlight Through a Window

(10,000 lux)

2 hours

6 hours

36 hours

140 hours

10 hours

38 hours

Daylight Through a Window on a Cloudy Day (5,000 lux)

9 hours 220 hours 61 hours

Indoor Fluorescent Lighting

(500 lux)

100 hours – – –

• The above exposure time values are all for reference only. Actual required exposure times depend on lighting conditions.

Reference

This section contains more detailed and technical information about watch operation.

It also contains important precautions and notes about the various features and functions of this watch.

Power Saving Function

The Power Saving function enters a sleep state automatically whenever the watch is left in an area where it is dark for a certain period. The table below shows how watch functions are affected by the Power Saving function.

Approximate Period in sleep state

Functions

3 to 4 days

8 days or more

• LCD off

• Alarm, hourly time signal, analog timekeeping and auto receive enabled

• LCD off, alarm and hourly time signal disabled

• Analog timekeeping stopped at 12 o’clock

• Auto receive disabled

• The sleep state is indicated by a blank screen.

• Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.

To recover from the sleep state

Perform any one of the following operations.

• Move the watch to a well-lit area.

• Press any button.

To turn Power Saving on and off

1. In the Timekeeping Mode, hold down A until the city

Power saving on indicator code starts to flash, which indicates the setting screen.

2. Press C ten times until the Power Saving on/off screen appears.

3. Press D to toggle Power Saving on ( ON ) and off ll ll l l l ll l l l ll

( OF ).

4. Press A to exit the setting screen.

• The Power Saving on indicator is on the display in all modes while Power Saving is turned on.

Auto Return Features

• If you leave the watch in the Alarm Mode or Hand Setting Mode, or with the battery level indicator displayed for two or three minutes without performing any operation, it returns to the Timekeeping Mode automatically.

• If you leave the watch with a flashing setting on the display for two or three minutes without performing any operation, the watch exits the setting screen automatically.

Scrolling

The B and D buttons are used in various modes and setting screens to scroll through data on the display. In most cases, holding down these buttons during a scroll operation scrolls through the data at high speed.

Initial Screens

When you enter the World Time or Alarm Mode, the data you were viewing when you last exited the mode appears first.

Radio-controlled Timekeeping Precautions

• Strong electrostatic charge can result in the wrong time being set.

• The time calibration signal bounces off the ionosphere. Because of this, such factors as changes in the reflectivity of the ionosphere, as well as movement of the ionosphere to higher altitudes due to seasonal atmospheric changes or the time of day may change the reception range of the signal and make reception temporarily impossible.

• Even if the time calibration signal is received properly, certain conditions can cause the time setting to be off by up to one second.

• The current time setting in accordance with the time calibration signal takes priority over any time settings you make manually.

• The watch is designed to update the date and day of the week for the period

January 1, 2000 to December 31, 2099 automatically. Setting of the date by the time calibration signal cannot be performed starting from January 1, 2100.

• This watch can receive signals that differentiate between leap years and non-leap years.

• Though this watch is designed to receive both time data (hour, minutes, seconds) and date data (year, month, day), certain signal conditions can limit reception to time data only.

• Normally, the signal reception date shown by the last signal screen is the date data included in the received time calibration signal. When only time data is received, however, the last signal screen shows the date as kept in the Timekeeping Mode at the time of signal reception.

• If you are in an area where proper time calibration signal reception is impossible, the watch keeps time with the precision noted in “Specifications”.

• If you have problems with proper time calibration signal reception or if the time setting is wrong after signal reception, check your Home City code, DST (summer time), and auto receive settings. The following are the initial factory defaults for these settings.

Setting

City code

DST (summer time)

Initial Factory Default

TYO (Tokyo)

(Auto switching)

Auto receive

Language

(Auto receive)

Japanese

Transmitters

This watch is designed to pick up the time calibration signals transmitted from Fort

Collins, Colorado in the United States, and from Fukushima and Fukuoka/Saga in

Japan.

• The following explains how the watch determines which transmitter it should check first.

HKG, SEL, TYO City Codes

In this case:

The first signal auto search operation after factory default settings are in effect, or after the city code has been changed

Any case other than the above.

The watch does this:

1. Checks the Fukushima signal first.

2. If the Fukushima signal cannot be received, checks the Fukuoka/Saga signal.

1. Checks the last successfully received signal first.

2. If the last successfully received signal cannot be received, checks the other signal.

When HNL , ANC , LAX , DEN , CHI , or NYC is selected as the Home City code, the watch will receive the signal transmitted from Fort Collins, Colorado.

Timekeeping

• Resetting the seconds to 00 while the current count is in the range of 30 to 59 causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are reset to 00 without changing the minutes.

• The day of the week is displayed in accordance with the date (year, month, and day) settings automatically.

• The year can be set in the range of 2000 to 2099.

• The watch’s built-in full automatic calendar makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except after you have the watch’s battery replaced.

• The current time for all city codes in the Timekeeping Mode and World Time Mode is calculated in accordance with the Greenwich Mean Time (GMT) differential for each city, based on your Home City time setting.

• GMT differential is calculated by this watch based on Universal Time Coordinated

(UTC*) data.

* UTC is the world-wide scientific standard of timekeeping. It is based upon carefully maintained atomic (cesium) clocks that keep time accurately to within microseconds. Leap seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s rotation.

The reference point for UTC is Greenwich, England.

12-hour/24-hour Timekeeping Formats

The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is also applied in all other modes.

• With the 12-hour format, the P (PM) indicator appears on the display for times in the range of noon to 11:59 p.m. and no indicator appears for times in the range of midnight to 11:59 a.m.

• With the 24-hour format, times are displayed in the range of 0:00 to 23:59 without any indicator.

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Operation Guide 4319

Illumination Precautions

An LED (light-emitting diode) and a light guide panel illuminate the face of the watch for easy reading in the dark. In any mode, press B to illuminate the face of the watch for about one second.

• The illumination provided by the light may be difficult to see when viewed under direct sunlight.

• Illumination turns off automatically whenever an alarm sounds.

• Frequent use of illumination shortens the battery operating time.

Specifications

Accuracy at normal temperature: ± 20 seconds a month (with no signal calibration)

Digital Timekeeping: Hour, minutes, seconds, p.m. (P), day, day of the week

Time system: Switchable between 12-hour and 24-hour formats

Calendar system: Full Auto-calendar pre-programmed from the year

2000 to 2099

Other: Home City code (can be assigned one of 30 city codes); Daylight Saving

Time (summer time)/Standard Time

Time Calibration Signal Reception: Auto receive up to six times a day (remaining auto receives cancelled as soon as one is successful); manual receive; last signal screen

Receivable Time Calibration Signals: Fukushima, Japan (Call Sign: JJY,

Frequency: 40.0 kHz); Fukuoka/Saga, Japan (Call Sign: JJY, Frequency:

60.0 kHz); Fort Collins, Colorado, the United States (Call Sign: WWVB,

Frequency: 60.0 kHz)

Analog Timekeeping: Hour, minutes (hand moves every 10 seconds), seconds

World Time: 30 cities (29 time zones)

Other: Standard Time/Daylight Saving Time (summer time)

Alarms: Three one-time daily alarms (AL1, AL2, AL3); Hourly Time Signal (SIG)

Stopwatch:

Measuring unit: 1/100 second

Measuring capacity: 99' 59.99''

Measuring modes: Elapsed time, split time, two finishes

Illumination: LED (light-emitting diode)

Other: Battery level indicator; Power Saving

Power Supply: Solar cell and a rechargeable battery

Approximate Battery Operating Time

6 months (from full charge to Level 5 when the watch is not exposed to light) under the following conditions:

• Display on 18 hours per day, sleep state 6 hours per day

• 1 illumination operation (1.5 seconds) per day

• 10 seconds of alarm operation per day

• 6 minutes of signal reception per day

Frequent use of illumination can shorten battery operating time.

City Code Table

City

Code

– – –

HNL

ANC

LAX

DEN

CHI

NYC

CCS*

RIO

– – –

– – –

GMT

LON

PAR

BER

ATH

CAI

JRS

JED

THR

DXB

KBL

KHI

DEL

DAC

RGN

BKK

HKG

SEL

TYO

ADL

SYD

NOU

WLG

City

Honolulu

Anchorage

Los Angeles

Denver

Chicago

New York

Caracas

Rio De Janeiro

UTC Offset/

GMT Differential

–11.0

–10.0

–09.0

–08.0

–07.0

–06.0

–05.0

–04.0

–03.0

–02.0

–01.0

+00.0

London

Paris

Berlin

Athens

Cairo

Jerusalem

Jeddah

Tehran

Dubai

Kabul

Karachi

Delhi

Dhaka

Yangon

Bangkok

Hong Kong

Seoul

Tokyo

Adelaide

Sydney

Noumea

Wellington

+01.0

+02.0

+03.0

+03.5

+04.0

+04.5

+05.0

+05.5

+06.0

+06.5

+07.0

+08.0

+09.0

+09.5

+10.0

+11.0

+12.0

• Based on data as of December 2008.

• UTC offsets and the use of summer time are subject to change in the country where they are used.

* In December 2007, the UTC offset for Caracas, Venezuela (CCS) was changed from

– 4.0 to – 4.5. However, this watch still uses the old UTC offset of – 4.0 when the

Caracas (CCS) city code is selected.

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