Module No. 3170

MA0807-EA

E

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 eachmode. Further details and technical information can befound in the “Reference” section.

• To ensure that this watch provides you with the years ofservice for which it is designed, be sure to carefully readand follow the instructions under “OperatingPrecautions” and “User Maintenance”.

• Be sure to keep all user documentation handy for futurereference.

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Contents

General Guide ......................................................................................................... E-4

Timekeeping ............................................................................................................ E-6

Alarms ...................................................................................................................... E-9

Countdown Timer ................................................................................................. E-16

Stopwatch .............................................................................................................. E-19

Dual Time ............................................................................................................... E-21

Backlight ................................................................................................................ E-22

Reference .............................................................................................................. E-23

Specifications ....................................................................................................... E-25

Operating Precautions ......................................................................................... E-27

User Maintenance ................................................................................................. E-36

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Procedure LookupThe following is a handy reference list of all the operational procedures contained inthis manual.

To set the time and date ......................................................................................... E-6To toggle between 12-hour and 24-hour timekeeping ......................................... E-8To set an alarm time ............................................................................................. E-11To test the alarm ................................................................................................... E-13To turn Alarms 2 through 5 and the Hourly Time Signal on and off ................ E-14To select the operation of Alarm1 ...................................................................... E-15To use the countdown timer ................................................................................ E-16To set the countdown start time .......................................................................... E-17To turn auto-repeat on and off ............................................................................. E-18To measure times with the stopwatch ................................................................ E-20

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To set the Dual Time ............................................................................................. E-21To turn on the backlight manually ...................................................................... E-22

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General Guide• Press C to change from mode to mode.• In any mode, press B to illuminate the display.

Timekeeping Mode Alarm Mode

Press .

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• In any mode, hold down C for about two seconds to return to the TimekeepingMode.

Stopwatch ModeCountdown TimerMode

Dual Time Mode

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TimekeepingUse the Timekeeping Mode to set and view the currenttime and date.

To set the time and date1. In the Timekeeping Mode, hold down A until the

seconds start to flash, which indicates the settingscreen.

2. Press C to move the flashing in the sequence shownbelow to select other settings.

Seconds Hour Minutes

Day Month YearPM indicator

Day of week

Seconds

Hour : Minutes

Month – Day

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3. When the setting you want to change is flashing, press D to change it asdescribed below.

• Pressing D while the seconds are in the range of 30 to 59 resets them to 00 andadds 1 to the minutes. In the range of 00 to 29, the minutes are unchanged.

4. Press A to exit the setting screen.• The day of the week is automatically displayed in accordance with the date (year,

month, and day) settings.• The year can be set in the range of 2000 to 2099.• The watch’s built-in full automatic calendar automatically makes allowances for

different month lengths and leap years. Once you set the date, there should be noreason to change it except after you have the watch’s battery replaced.

To change this settingSeconds

Hour, Minutes, Year, Month, Day

Perform this button operationPress D to reset to 00.

Press D to increase the setting.

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To toggle between 12-hour and 24-hour timekeepingIn the Timekeeping Mode, press D to toggle between 12-hour timekeeping and24-hour timekeeping.• With the 12-hour format, the P (PM) indicator appears to the left of the hour digits for

times in the range of noon to 11:59 p.m. and no indicator appears to the left of thehour digits 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, withoutany indicator.

• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode isapplied in all other modes.

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AlarmsYou can set up to five independent multi-function alarmswith hour, minutes, month, and day. When an alarm isturned on, the alarm tone sounds when the alarm time isreached. One of the alarms can be configured as asnooze alarm or a one-time alarm, while the other four areone-time alarms.You can also turn on an Hourly Time Signal that causesthe watch to beep twice every hour on the hour.• There are five alarms numbered 1 through 5. You can

configure Alarm 1 as a snooze alarm or a one-timealarm. Alarms 2 through 5 can be used as one-timealarms only.

• All of the operations in this section are performed in theAlarm Mode, which you enter by pressing C (pageE-4).

Alarm number

Alarm date(Month – Day)

Alarm time(Hour : Minutes)

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Alarm TypesThe alarm type is determined by the settings you make, as described below.

• Daily alarmSet the hour and minutes for the alarm time. This type of setting causes the alarm tosound everyday at the time you set.

• Date alarmSet the month, day, hour and minutes for the alarm time. This type of setting causesthe alarm to sound at the specific time, on the specific date you set.

• 1-Month alarmSet the month, hour and minutes for the alarm time. This type of setting causes thealarm to sound everyday at time you set, only during the month you set.

• Monthly alarmSet the day, hour and minutes for the alarm time. This type of setting causes the alarmto sound every month at time you set, on the day you set.

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To set an alarm time1. In the Alarm Mode, use D to scroll through the alarm

screens until the one whose time you want to set isdisplayed.

Press .

• To set a one-time alarm, display one of the screens indicated by an alarm numberfrom 2 through 5. To set the snooze alarm, display the screen indicated by 1.

2. After you select an alarm, hold down A until the hour setting of the alarm timestarts to flash, which indicates the setting screen.• This operation automatically turns on the alarm.

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3. Press C to move the flashing in the sequence shown below to select othersettings.

Hour Minutes Month Day

4. While a setting is flashing, press D to increase it.• To set an alarm that does not include a month (Daily alarm, Monthly alarm),

set x for the month. Press D until the x mark appears (between 12 and 1) whilemonth setting is flashing.

• To set an alarm that does not include a day (Daily alarm, 1-Month alarm),set xx for the day. Press D until the xx mark appears (between the end of themonth and 1) while the day setting is flashing.

• When setting the alarm time using the 12-hour format, take care to set the timecorrectly as a.m. or p.m. (P indicator).

5. Press A to exit the setting screen.

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Alarm OperationThe alarm tone sounds at the preset time for 10 seconds, regardless of the mode thewatch is in. In the case of the snooze alarm, the alarm operation is performed a totalof seven times, every five minutes, until you turn the alarm off or change it to a one-time alarm (page E-14).• To stop the alarm tone after it starts to sound, press any button.• Performing any one of the following operations during a 5-minute interval between

snooze alarms cancels the current snooze alarm operation.Displaying the Timekeeping Mode setting screen (page E-6)Displaying the alarm 1 setting screen (page E-11)

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

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To turn Alarms 2 through 5 and the Hourly Time Signal on and off1. In the Alarm Mode, use D to select a one-time alarm

(alarm number 2 through 5) or the Hourly Time Signal(:00).

2. Press A to toggle it on and off.• The on/off status of Alarms 2 through 5 and the Hourly

Time Signal is shown by indicators along the bottom ofthe displays.

• The alarm on indicators and Hourly time Signal onindicator are displayed in all modes.

• While an alarm is sounding, the applicable alarm onindicator flashes on the display.

Hourly time signalon indicator

Alarm on indicator

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To select the operation of Alarm1

1. In the Alarm Mode, use D to select Alarm1.2. Press A to cycle through the available settings in the sequence shown below.

Snooze on indicator ( ) and Alarm1 on indicator

One-timealarm on

Alarm offSnooze alarm on

Press .

• The snooze on indicator ( ) and Alarm1 on indicator are displayed in all modes.• The snooze on indicator ( ) flashes during the 5-minute intervals between

alarms.• The alarm indicator (Alarm1 on and/or snooze on) flashes while the alarm is

sounding.

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Countdown TimerThe countdown timer can be set within a range ofone minute to 24 hours. An alarm sounds when thecountdown reaches zero.• You can also select auto-repeat, which automatically

restarts the countdown from the original value you setwhenever zero is reached.

• All of the operations in this section are performed in theCountdown Timer Mode, which you enter by pressingC (page E-5).

To use the countdown timerPress D while in the Countdown Timer Mode to start thecountdown timer.

• When the end of the countdown is reached and auto-repeat is turned off, the alarmsounds for 10 seconds or until you stop it by pressing any button. The countdowntime is automatically reset to its starting value after the alarm stops.

Seconds

Minutes

Hours

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• The countdown timer measurement operation continues even if you exit theCountdown Timer Mode.

• Press D while a countdown operation is in progress to pause it. Press D again toresume the countdown.

• To completely stop a countdown operation, first pause it (by pressing D), and thenpress A. This returns the countdown time to its starting value.

To set the countdown start time1. In the Countdown Timer Mode, hold down A until the

hours setting of the countdown start time starts to flash,which indicates the setting screen.

2. Press C to move the flashing between the hours andminutes settings.

3. While a setting is flashing, use D to increase it.• To set the starting value of the countdown time to

24 hours, set 0:00.4. Press A to exit the setting screen.

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To turn auto-repeat on and off1. In the Countdown Timer Mode, hold down A until the

hours setting of the countdown start time starts to flash,which indicates the setting screen.

2. Press B to toggle auto-repeat on ( displayed) andoff ( not displayed).

• Note that pressing B in the above operation also turnson the backlight.

• When the end of the countdown is reached whileauto-repeat is on, the alarm sounds, but the countdownrestarts from the beginning without stopping. You canstop the countdown by pressing D and manually resetto the start time by pressing A.

• The auto-repeat indicator appears in the CountdownTimer Mode only.

Auto-repeat indicator

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StopwatchThe stopwatch lets you measure elapsed time, split times,and two finishes.• The display range of the stopwatch is 23 hours,

59 minutes, 59.99 seconds.• The stopwatch continues to run, restarting from zero

after it reaches its limit, until you stop it.• The stopwatch measurement operation continues even

if you exit the Stopwatch Mode.• Exiting the Stopwatch Mode while a split time is frozen

on the display clears the split time and returns toelapsed time measurement.

• All of the operations in this section are performed in theStopwatch Mode, which you enter by pressing C (pageE-5).

1/100 second

Seconds

Minutes

Hours

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To measure times with the stopwatch

Elapsed time

Start Stop Re-start Stop Clear

Start Split(SPL displayed)

Split release Stop Clear

Start Split Stop Split release Clear

Split time

Two Finishes

First runner finishes.Display time of first runner.

Second runner finishes.

Display time of second runner.

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Dual TimeThe Dual Time Mode lets you keep track of time in a different time zone.• In the Dual Time Mode, the seconds count is synchronized with the seconds count

of the Timekeeping Mode.

To set the Dual Time1. Press C to enter the Dual Time Mode (page E-5).2. In the Dual Time Mode, hold down A until the hour

setting starts to flash, which indicates the settingscreen.

3. Press C to change the selection in the followingsequence.

Hour Minutes

4. Press D to increase the setting.5. Press A to exit the setting screen.

Seconds

Hour : Minutes

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BacklightThe backlight uses an LED (light-emitting diode) and alight guide panel that cause the entire display to glow foreasy reading in the dark.• See “Backlight Precautions” on page E-24 for other

important information about using the backlight.

To turn on the backlight manuallyIn any mode, press B to illuminate the display for aboutone second.

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ReferenceThis section contains more detailed and technical information about watch operation.It also contains important precautions and notes about the various features andfunctions of this watch.

Auto return featuresIf you leave a screen with flashing digits for two or three minutes without performingany operation, the watch automatically saves any settings you have made up to thatpoint and exits the setting screen.

Data and Setting ScrollingThe D button is used to scroll through setting screen data on the display. Holdingdown this button during a scroll operation scrolls through the data at high speed.

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Backlight Precautions• The illumination provided by the backlight may be hard to see when viewed under

direct sunlight.• The backlight automatically stops illuminating whenever an alarm sounds.• Frequent use of the backlight shortens the battery life.

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SpecificationsAccuracy at normal temperature: ±30 seconds a monthTimekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week

Time system: Switchable between 12-hour and 24-hour formatsCalendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099

Alarms: 5 Multi-function∗alarms (Four one-time alarms; one snooze/one-time alarm);Hourly Time Signal∗Alarm type: Daily alarm, Date alarm, 1-month alarm, Monthly alarm

Countdown TimerMeasuring unit: 1 secondInput range: 1 minute to 24 hours (1-minute increments and 1-hour increments)Other: Auto-repeat function

StopwatchMeasuring unit: 1/100 of a secondMeasuring capacity: 23:59' 59.99''Measuring modes: Elapsed time, split time, two finishes

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Dual Time: Hour, minutes, seconds, p.m. (P)Other: Backlight (light-emitting diode)

Battery: One lithium battery (Type: CR2025)Approximately 10 years on type CR2025 (assuming alarm operation 10 sec./day,and one backlight operation 1.5 sec./day)

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Operating Precautions

Water Resistance• The following applies to watches with WATER RESIST or WATER RESISTANT marked

on the back cover.

Marking

Example ofDaily Use

10Atmospheres

10BAR

YesYesYesYes

20Atmospheres

20BAR

YesYesYesYes

5Atmospheres

5BAR

YesYesNoNo

NoBAR mark

YesNoNoNo

Enhanced Water Resistance UnderDaily Use

On watch front oron back coverHand washing, rainWater-related work, swimmingWindsurfingSkin diving

WaterResistanceUnder DailyUse

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• Do not use this watch for scuba diving or other types of diving that requires air tanks.• Watches that do not have WATER RESIST or WATER RESISTANT marked on the

back cover are not protected against the effects of sweat. Avoid using such a watchunder conditions where it will be exposed to large amounts of sweat or moisture, or todirect splashing with water.

• Even if a watch is water-resistant, do not operate its buttons or crown while it issubmersed in water or wet.

• Even if a watch is water-resistant, avoid wearing it in the bath or in areas wheredetergents (soap, shampoo, etc.) are being used. Such conditions can reduce waterresistance.

• After submersion in seawater, use plain water to rinse all salt and dirt from the watch.• In order to maintain water resistance, have the gaskets of your watch replace periodically

(about once every two or three years).• A trained technician will know how to check your watch for proper water resistance

whenever you have its battery replaced. Battery replacement requires the use of specialtools. Always request battery replacement from your original retailer or from anauthorized CASIO Service Center.

• Some water-resistant watches come with fashionable leather bands. Avoid swimming,washing, or any other activity that causes direct exposure of a leather band to water.

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• The inside surface of the watch glass may fog when the watch is exposed to a suddendrop in temperature. No problem is indicated if the fogging clears up relatively quickly.If the fogging does not clear or if water has gotten into the watch, take the watch in forrepair immediately.

• Continued use of the watch with water inside can result in damage to electronic andmechanical components, the face of the watch, etc.

Band• Tightening the band too tightly can cause you to sweat and make it hard for air to pass

under the band, which can lead to skin irritation. Do not fasten the band too tightly.There should be enough room between the band and your wrist so you can insert yourfinger.

• Deterioration, rust, or corrosion of the band can cause it to break, which may result inthe watch falling off your wrist and becoming lost. Be sure to take good care of theband and keep it clean. Should you notice any breakage, discoloration, looseness orother problem with the band, immediately contact your original retailer or an authorizedCASIO Service Center to have it checked, repaired, or replaced. Note that you will becharged for any repair or replacement of the band.

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Temperature• Never leave the watch on the dashboard of a car, near a heater, or in any other location

that is subject to very high temperatures. Do not leave the watch where it will be exposedto very low temperatures, either. Temperature extremes can cause the watch to lose orgain time, to stop, or otherwise malfunction.

• Leaving the watch in an area hotter than +60°C (140°F) for long periods can lead toproblems with its LCD. The LCD may become difficult to read at temperatures lowerthan 0°C (32°F) and greater than +40°C (104°F).

Impact• Your watch is designed to withstand impact incurred during normal daily use and light

activity such as playing catch, tennis, etc. Dropping the watch or otherwise subjectingit to strong impact, however, can lead to malfunction.Note that watches with shock-resistant designs (G-SHOCK, Baby-G, G-ms) can beworn while operating a chain saw or engaging in other activities that generate strongvibration, or while engage in strenuous sports activities (motocross, etc.).

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Magnetism• Though your watch normally is not affected by magnetism, very strong magnetism

(from medical equipment, etc.) should be avoided because it can cause malfunctionand damage to electronic components.

Electrostatic Charge• Exposure to very strong electrostatic charge can cause the watch to display the wrong

time. Very strong electrostatic charge even can damage electronic components.• Electrostatic charge can cause the display to go blank momentarily or cause a rainbow

effect on the display.

Chemicals• Do not allow the watch to come into contact with thinner, gasoline, solvents, oils, or

fats, or with any cleaners, adhesives, paints, medicines, or cosmetics that containsuch ingredients. Doing so can cause discoloration of or damage to the case, resinband, leather band, and other parts.

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Storage• If you do not plan to use the watch for a long time, wipe it thoroughly free of all dirt,

sweat, and moisture, and store it in a cool, dry place.

Resin Components• Allowing the watch to remain in contact with other items or storing it together with other

items for long periods while it is wet can cause the color of the other items to transferto the resin components of the watch. Be sure to dry off the watch thoroughly beforestoring it and make sure it is not in contact with other items.

• Leaving the watch where it is exposed to direct sunlight (ultraviolet rays) for long periodsor failure to clean dirt from the watch for long periods can cause it to become discolored.

• Friction caused by certain conditions (frequent external force, sustained rubbing, impact,etc.) can cause discoloration of painted components.

• If there are printed figures on the band, strong rubbing of the printed area can causediscoloration.

• Failure to clean dirt from the watch for long periods can cause fluorescent color tofade. Wash dirt off with water as soon as possible and then dry the watch.

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• Semi-transparent resin parts can become discolored due to sweat and dirt, and ifexposed to high temperatures for long periods.

• Contact an authorized CASIO Service Center to have resin components replaced.Note that you will be charged for replacement costs.

Natural Leather and Imitation Leather Bands• Allowing the watch to remain in contact with other items or storing it together with other

items while it is wet for long periods can cause the color of the other items to transferto the natural leather or imitation leather band of the watch. Be sure to dry off the watchthoroughly before storing it and make sure it is not in contact with other items.

• Leaving a leather band where it is exposed to direct sunlight (ultraviolet rays) for longperiods or failure to clean dirt from a leather band for long periods can cause it tobecome discolored.

Important!• Subjecting a natural leather or imitation leather band to rubbing or dirt can cause color

transfer and discoloration.

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Metal Components• Failure to clean dirt from a metal band can lead to formation of rust, even if the band is

stainless steel or plated. If the watch is exposed to sweat or water, wipe it thoroughlywith a soft, absorbent cloth and then store it in a well-ventilated location to dry.

• To clean the band, use a soft toothbrush or similar tool to scrub it with a weak solutionof water and a mild neutral detergent. Take care to avoid getting solution on the watchcase.

Bacteria and Odor Resistant Band• The bacteria and odor resistant band protects against odor generated by the formation

of bacteria from sweat, which ensures good comfort and hygiene. In order to ensuremaximum bacteria and odor resistance, keep the band clean. Use an absorbent softcloth to wipe the band clean of dirt, sweat, and moisture. The bacteria and odor resistantband suppresses the formation of organisms and bacteria. It does not protect againstrash due to allergic reaction, etc.

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Display• Display figures may be difficult to read when viewed from an angle.

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

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User Maintenance

Caring for Your Watch• A dirty or rusty case or band can soil the sleeve of your clothing, cause skin irritation,

and even interfere with watch performance. Be sure to keep the case and band cleanat all times. Rust tends to form easily after the watch is exposed to seawater and thenleft without cleaning.

• Sometimes a smudge like pattern may appear on the surface of a resin band. This willnot have any affect on your skin or clothing. Wipe the band with a cloth to clean it.

• Keep a leather band clean by wiping it with a dry cloth. Both resin bands and leatherband can become worn and cracked over time when subjected to normal daily use.

• Should your band become badly cracked or worn, be sure to have it replaced with anew one. Request band replacement from your original retailer or an authorized CASIOService Center. Note that you will be charged for band replacement costs, even if yourwatch is still covered by its warranty.

• Remember that you wear your watch next to your skin, just like a piece of clothing.Because of this, you should always keep your watch clean. Use a soft, absorbent clothto wipe off any dirt, sweat, water, or other foreign matter from the case and band.

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Dangers of Poor Watch Care

Rust• Though the stainless steel used for the watch is highly rust-resistant, rust can form if

the watch is not cleaned after it becomes dirty. Failure of oxygen to come into contactwith the metal because it is dirty causes breakdown of the oxidization layer on themetal surface, which leads to the formation of rust.

• Even if the surface of the metal appears clean, sweat and rust in crevasses can soilthe sleeves of clothing, cause skin irritation, and even interfere with watch performance.

Premature Wear• Leaving sweat or water on a resin band or storing it an area subject to high moisture

can lead to premature wear, cuts, and breaks.

Skin Irritation• Individuals with sensitive skin or in poor physical condition may experience skin irritation

when wearing a watch. Such individuals should keep their leather band or resin bandparticularly clean, or switch to a metal band. Should you ever experience a rash orother skin irritation, immediately remove the watch and contact a skin care professional.

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Battery Replacement• Leave battery replacement up to your original retailer or authorized CASIO Service

Center.• Have the battery replaced only with the type specified by in this manual. Use of another

type of battery can cause malfunction.• When replacing the battery, also request a check for proper water resistance. Note

that you will be charged separately for water resistance inspection.

Initial Battery• The battery that comes loaded in your watch when you purchase it is used for function

and performance testing at the factory.• This type of test battery may go dead quicker than the normally rated battery life as

noted in the User’s Guide. Note that you will be charged for replacement of this battery,even if replacement is required within the watch’s warranty period.

Low Battery Power• Low battery power is indicated by large timekeeping error, when display contents are

dim, or when the display does blank.• Operation while battery power is low can result in malfunction. Replace the battery as

soon as possible.