MA2203-A © 2022 CASIO COMPUTER CO., LTD.
Congratulations upon your selection of this CASIO watch. To ensure that this watch provides you with the years of service for which it is designed, carefully read and follow the instructions in this manual, especially the information under “Operating Precautions” and “User Maintenance”.
About This Manual •D epending on the model of your watch, display text appears either as dark figures on a light background, or light figures on a dark background. All sample displays in this manual are shown using dark figures on a light background. •B utton 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.
Contents About This Manual............................................................................................... EN-1 Watch Features.................................................................................................... EN-5 Selecting a Mode................................................................................................. EN-6 Timekeeping.........................................................................................................
Recall Mode....................................................................................................... EN-26 To recall stopwatch time records....................................................................EN-27 To delete a log................................................................................................EN-29 Timer................................................................................................................... EN-30 To use the countdown timer...............
Illumination......................................................................................................... EN-45 To illuminate the display..................................................................................EN-45 To specify the illumination duration................................................................EN-46 Reference........................................................................................................... EN-47 To turn the button operation tone on and off..
Watch Features ◆ Stopwatch ◆ Timer ◆ Alarm ◆ Dual Time EN-5
Selecting a Mode • Press C to change from mode to mode. • In any mode (except when a setting screen is on the display), press B to illuminate the face of the watch.
C Dual Time Mode Timer Mode Alarm Mode C C EN-7
Timekeeping se the Timekeeping Mode to set and view the U current time and date.
To set the time and date 1. I n the Timekeeping Mode, hold down A until the second starts to flash, which indicates the setting screen. 2. Press C to move the flashing in the sequence shown below to select other settings.
3. When the setting you want to change is flashing, use B and D to change it as described below. Screen To do this: Do this: Reset the second to 00 Toggle between Daylight Saving Time (On) and Standard Time (OF) Press D. Change the hour or minute Change the year Change the month or day EN-10 Use B (–) and D (+).
4. Press A to exit the setting screen. • The day of the week is displayed automatically in accordance with the date (year, month, and day) settings. • See “Daylight Saving Time (DST) Setting” below for details about the DST setting. To toggle between 12-hour and 24-hour timekeeping In the Timekeeping Mode, press D to toggle between 12-hour timekeeping and 24-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.
Daylight Saving Time (DST) Setting 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. To toggle the Timekeeping Mode between DST and Standard Time On/Off status 1. In the Timekeeping Mode, hold down A until the second starts to flash, which indicates the setting screen. 2. Press C once and the DST setting screen appears. 3.
Stopwatch Remaining free records Minutes Hours Seconds 1/100 second The stopwatch lets you measure elapsed time, lap times, split times, and two finishes. Lap times and split times can be stored in memory. • The display range of the stopwatch is 99 hours, 59 minutes, 59 seconds. • All of the operations in this section are performed in the Stopwatch Mode, which you enter by pressing C (page EN-6). Note • “Lap time” is the time spent to cover a specific segment of a race, such as one lap around a track.
•T he stopwatch measurement operation continues even if you exit the Stopwatch Mode. • For information about how stopwatch times are stored in memory, see “Memory Management” (page EN-24). Viewing the Stopwatch Displays The information that appears in the watch’s upper and lower displays depends on whether you are measuring lap times or split times.
•S ee “To measure elapsed time with lap times” (page EN-18) and “To measure elapsed time with split times” (page EN-21) for more information about each type of measurement. • You can perform elapsed time measurement starting from either the lap time screen or the split time screen (pages EN-18 and EN-21). Whenever you enter the Stopwatch Mode, the screen (lap time or split time) that was displayed when you last exited the mode will appear first.
Seconds Minutes Minutes 1/100 second Hours Seconds More than one hour More than 10 hours Hours Seconds Minutes EN-16 1/100 second Hours Minutes Seconds
To measure elapsed time Note • You can perform the following steps starting from either the lap time screen or the split time screen. 1. Press D to start the stopwatch. 2. Press D again to stop the stopwatch. • You can resume the measurement operation by pressing D. 3. Press A to clear the stopwatch to all zeros.
To measure elapsed time with lap times 1. When the stopwatch display shows all zeros, press A to display the lap time screen (indicated by LAP). 2. Press D to start an elapsed time measurement. • At the time, both the upper and lower displays will show identical times. 3. Press A to record the time of the first lap.
Lap time Elapsed time Lap time Lap number •T his freezes the current lap time in the upper part of the display for about eight seconds, while measurement of total elapsed time and the next lap time continue internally. The lap number of the displayed time appears in the lower display. • After eight seconds, the ongoing elapsed time measurement re-appears in the lower display.
4. Repeat step 3 to record more lap times. 5. Press D to stop the stopwatch. 6. Press A to clear the stopwatch to all zeros. • Lap numbers are incremented automatically starting from 1 whenever you press A in step 3 of the above procedure. The maximum lap number is 99. Recording a lap after that causes the lap number count to restart from 00.
To measure elapsed time with split times 1. When the stopwatch display shows all zeros, press A Lap time to display the split time screen (indicated by SPL). 2. Press D to start an elapsed time measurement. • At the time, both the upper and lower displays will show identical times. Elapsed time 3. Press A to record the time of the first split.
Split Time Recording (Displayed for eight seconds after A is pressed.) Split number Split time EN-22 4. Repeat step 3 to record more split times. 5. Press D to stop the stopwatch. 6. Press A to clear the stopwatch to all zeros. • Split numbers are incremented automatically starting from 1 whenever you press A in step 3 of the above procedure. The maximum split number is 99. Recording a split time after that causes the split number count to restart from 00.
To time first and second place finishes 1. W hen the stopwatch display shows all zeros, press A to display the split time screen (indicated by SPL). 2. Press D to start a time measurement. 3. Press A when the first finisher crosses the finish line. • This freezes the time of the first finisher in the lower part of the display for about eight seconds. After that, the display returns to elapsed time measurement. 4. Press D when the second finisher crosses the finish line.
Memory Management A new log is created each time you press D in the Stopwatch Mode to start a new elapsed time measurement operation. A log contains a log title screen, and records of all the lap or split times you record during the current elapsed time measurement operation. • The capacity of the watch’s memory is 60 records.
How stopwatch data is stored The following table shows how stopwatch data is stored when you perform stopwatch button operations. Stopwatch Button Operation Data Storage Description From all-zeros, press D to start. Creates a new log. Stores the date the button was pressed, and the new log number. Press A to display lap/split time. Creates a new record with each button operation. Stores the lap and split times and total elapsed time at each point the button is pressed.
Recall Mode Log Title Screen Day of week Month – Day Log number EN-26 Use the Recall Mode to recall and delete logs and records you stored in the Stopwatch Mode. You can use the Recall Mode to view both lap and split time records. • When you enter the Recall Mode, the newest log recorded in the Stopwatch Mode will appear first. If there are no logs in memory, – – – – appears on the display.
To recall stopwatch time records 1. I n the Stopwatch Mode, check to make sure that the displays reset to all zeros (page EN-17). • If all zeros are not displayed, reset the stopwatch. 2. Use the A button to select either the lap time screen (to view lap time records) or the split time screen (to view split time records) (pages EN-18 and EN-21). • To convert a lap time saved in the Stopwatch Mode to a split time, select the split time screen. 3. Press the C button to enter the Recall Mode. 4.
First record Lap time Last record Lap number Log Title Screen D D Log number Split number EN-28 Split time
•W hether you will be able to view lap time records or split time records will depend on the screen you selected in step 2, above. To delete a log 1. In the Recall Mode, display the title screen of the log you want to delete. 2. Hold down B and D until CLR stops flashing on the display. • This deletes the log and all the records inside it. • Deleting a single log slides all newer logs (ones with higher log numbers) upwards to fill the empty space.
Timer Timekeeping Mode time Seconds Hours Minutes Auto-repeat on indicator EN-30 You can set the countdown timer within a range of one minute to 24 hours. An alarm sounds when the countdown reaches zero. • You also can select auto-repeat, which automatically restarts the countdown from the original value you set whenever zero is reached. • All of the operations in this section are performed in the Timer Mode, which you enter by pressing C (page EN-7).
To use the countdown timer Press D while in the Timer Mode to start the countdown timer. • When the end of the countdown is reached and auto-repeat is turned off, the alarm sounds for 10 seconds or until you stop it by pressing any button. The countdown time is reset automatically to its starting value after the alarm stops. • When auto-repeat is turned on, the countdown will restart automatically without pausing when it reaches zero. The alarm sounds when the countdown reaches zero.
To configure countdown start time and auto-repeat settings 1. While the countdown start time is on the display in the On/Off status Timer Mode, hold down A until the hour setting of the countdown start time starts to flash, which indicates the setting screen. • If the countdown start time is not displayed, use the procedure under “To use the countdown timer” (page EN-31) to display it. Auto-repeat on indicator 2.
3. Perform the following operations, depending on which setting currently is selected on the display. • While the start time setting is flashing, use B (–) and D (+) to change it. • Set 0:00 to specify 24 hours. • While the auto-repeat on/off setting (On or OF) is flashing on the display, press D to toggle auto-repeat on (On) and off (OF). 4. Press A to exit the setting screen. • The auto-repeat on indicator ( ) is displayed on the Timer Mode screen while this function is turned on.
Alarm Alarm date (Month − Day) Alarm number Alarm time (Hour : Minute) EN-34 You can set up to three independent multi-function alarms with hour, minutes, month, and day. When an alarm is turned on, the alarm tone sounds when the alarm time is reached. One of the alarms has a snooze feature. You also can turn on an Hourly Time Signal that causes the watch to beep twice every hour on the hour. • There are three alarm screens numbered 1 through 3. The hourly time signal screen is indicated by :00.
Alarm Types The alarm type is determined by the settings you make, as described below. • Daily alarm Set the hour and minutes for the alarm time. This type of setting causes the alarm to sound everyday at the time you set. • Date alarm Set the month, day, hour and minutes for the alarm time. This type of setting causes the alarm to sound at the specific time, on the specific date you set. • 1-Month alarm Set the month, hour and minutes for the alarm time.
To set an alarm time 1. In the Alarm Mode, use D to scroll through the alarm screens until the one whose time you want to set is displayed. –1 D –2 D –3 D :00 D • Alarm 1 has a snooze feature. • The snooze alarm operation repeats every five minutes. 2. After you select an alarm, hold down A until the hour setting of the alarm time starts to flash. This indicates the setting screen. • This operation turns on the alarm automatically.
3. Press C to move the flashing in the sequence shown below to select other settings. C Hour C Minute C Month Day C 4. While a setting is flashing, use B (–) and D (+) to change it. • To set an alarm that does not include a month (daily alarm, monthly alarm), set − for the month. Use B and D until the − mark appears (between 12 and 1) while month setting is flashing. • To set an alarm that does not include a day (daily alarm, 1-month alarm), set − − for the day.
Alarm Operation The alarm sounds at the preset time for about 10 seconds. When the snooze feature (Alarm 1) is turned on, the alarm operation is performed a total of seven times, every five minutes, until you turn the alarm off or turn off the snooze feature (page EN-39). • Alarm and Hourly Time Signal operations are performed in accordance with the Timekeeping Mode time. Note • Pressing any button stops the alarm tone operation.
To select the operation of Alarm 1 1. I n the Alarm Mode, use D to select Alarm 1. 2. Press A to cycle through the available settings in the sequence shown below. A A Alarm on A Snooze feature on Alarm off •T he applicable alarm on indicator is displayed in all modes when an alarm is turned on. • The snooze indicator flashes while the snooze alarm is sounding and during the 5-minute intervals between alarms.
•D isplaying the Alarm 1 setting screen (page EN-36) while the snooze alarm is turned on turns off the snooze alarm automatically. To turn Alarms 2 and 3 on and off Alarm on indicator 1. In the Alarm Mode, use D to select alarm number 2 or 3. 2. Press A to toggle the displayed alarm on and off. • Turning on an alarm (2 or 3) displays the alarm on indicator on its screen. • The alarm on indicator is displayed in all modes.
To turn the hourly time signal on and off Hourly time signal 1. In the Alarm Mode, use D to select the Hourly Time Signal. on indicator 2. Press A to toggle the displayed item on and off. • Turning on the Hourly Time Signal displays the hourly time signal on indicator on its screen. • The hourly time signal on indicator is displayed in all modes.
Dual Time Timekeeping Mode time The Dual Time Mode lets you keep track of time in a different time zone. You can select Standard Time or Daylight Saving Time for the Dual Time. • The seconds count of the Dual Time is synchronized with the seconds count of the Timekeeping Mode. To set the Dual Time 1. Press C to enter the Dual Time Mode (page EN-7). Dual time (Hour : Minute Second) EN-42 2. In the Dual Time Mode, hold down A until the DST setting starts to flash, which indicates the setting screen.
3. Press C to move the flashing in the sequence shown below to select the other settings. C DST C Hour Minute C 4. When the setting you want to change is flashing, use B and D to change it as described below. Screen To do this: Do this: Toggle between Daylight Saving Time (On) and Standard Time (OF) Press D. Change the hour or minute Use B (–) and D (+).
5. Press A to exit the setting screen. • The DST indicator on the Dual Time Mode screen indicates that DST is turned on for the Dual Time Mode time.
Illumination An LED (light-emitting diode) illuminates the face of the watch for easy reading in the dark. • See “Illumination Precautions” (page EN-49) for other important information about using illumination. To illuminate the display In any mode, press B to turn on illumination. • You can use the procedure below to select either 1.5 seconds or 3 seconds as the illumination duration. When you press B, illumination will remain on for about 1.
To specify the illumination duration 1. In the Timekeeping Mode, hold down A until the seconds start to flash, which indicates the setting screen. 2. While the seconds are flashing, press B to toggle the setting between 1.5 seconds (−) and 3 seconds ( ). 3. Press A to exit the setting screen.
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. Auto Return Feature • If you leave a screen with flashing digits on the display for two or three minutes without performing any operation, the watch saves any settings you have made up to that point and exits the setting screen automatically.
Button Operation Tone The button operation tone sounds any time you press one of the watch’s buttons. You can turn the button operation tone on or off as desired. • The multi-function alarms and Timer Mode alarm will sound even if the button operation tone is turned off.
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. 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 year can be set in the range of 2000 to 2099.
Specifications Accuracy at normal temperature: ± 30 seconds a month Timekeeping: Hour, minute, second, a.m. (A)/ p.m. (P), month, day, day of the week Time format: 12-hour and 24-hour Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099 aylight Saving Time (summer time)/Standard Time Other: D Stopwatch: Measurement Capacity: 99 hours, 59 minutes, 59 seconds Measurement Units: Depends on range. Lap Times: 1/100 second from 00:00 00 to 00:59 59.
Timer: Measuring unit: one second Input range: one minute to 24 hours (1-minute increments and 1-hour increments) Other: Auto-repeat timing Alarm: 3 Multi-function* alarms (1 with snooze feature); Hourly Time Signal * Alarm type: Daily alarm, Date alarm, 1-month alarm, Monthly alarm Dual Time: Hour, minute, second, a.m. (A)/p.m. (P) Other: D aylight Saving Time (summer time)/Standard Time Illumination: LED (light-emitting diode); Selectable illumination duration (approximately 1.
Operating Precautions Water Resistance • The information below applies to watches with WATER RESIST or WATER RESISTANT marked on the back cover.
• 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 watch under conditions where it will be exposed to large amounts of sweat or moisture, or to direct splashing with water. • Even if a watch is water resistant, note the usage precautions described below. Such types of use reduce water resistance performance and can cause fogging of the glass.
• A trained technician will inspect your watch for proper water resistance whenever you have its battery replaced. Battery replacement requires the use of special tools. Always request battery replacement from your original retailer or from an authorized 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.
Band • Tightening the band too tightly can cause you to sweat and make it difficult 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 your finger. • Deterioration, rust, and other conditions can cause the band to break or come off of your watch, which in turn can cause band pins to fly out of position or to fall out.
Temperature • Never leave your 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 your watch where it will be exposed to very low temperatures. Temperature extremes can cause your watch to lose or gain time, to stop, or otherwise malfunction. • Leaving your watch in an area hotter than +60°C (140°F) for long periods can lead to problems with its LCD.
Magnetism • Though a digital watch normally is not affected by magnetism, very strong magnetism (from medical equipment, etc.) should be avoided because it can cause malfunction and damage to electronic components. Electrostatic Charge • Exposure to very strong electrostatic charge can cause your watch to display the wrong time. Very strong electrostatic charge even can damage electronic components.
Storage • If you do not plan to use your watch for a long time, thoroughly wipe it free of all dirt, sweat, and moisture, and store it in a cool, dry place. Resin Components • Allowing your watch to remain in contact with other items or storing it together with other items for long periods while it is wet can cause color on resin components to transfer to the other items, or the color of the other items to transfer to the resin components of your watch.
• Leaving your watch wet for long periods can cause fluorescent color to fade. Wipe the watch dry as soon as possible after it becomes wet. • Semi-transparent resin parts can become discolored due to sweat and dirt, and if exposed to high temperatures and humidity for long periods. • Daily use and long-term storage of your watch can lead to deterioration, breaking, or bending of resin components. The extent of such damage depends on usage conditions and storage conditions.
• Leaving a leather band where it is exposed to direct sunlight (ultraviolet rays) for long periods or failure to clean dirt from a leather band for long periods can cause it to become discolored. CAUTION: Exposing a leather band to rubbing or dirt can cause color transfer and discoloration. Metal Components • Failure to clean dirt from metal components can lead to formation of rust, even if components are stainless steel or plated.
Bacteria and Odor Resistant Band • The bacteria and odor resistant band protects against odor generated by the formation of bacteria from sweat, which ensures comfort and hygiene. In order to ensure maximum bacteria and odor resistance, keep the band clean. Use an absorbent soft cloth to thoroughly wipe the band clean of dirt, sweat, and moisture. A bacteria and odor resistant band suppresses the formation of organisms and bacteria. It does not protect against rash due to allergic reaction, etc.
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 your watch or its malfunction.
User Maintenance Caring for Your Watch Remember that you wear your watch next to your skin, just like a piece of clothing. To ensure your watch performs at the level for which it is designed, keep it clean by frequently wiping with a soft cloth to keep your watch and band free of dirt, sweat, water and other foreign matter. • Whenever your watch is exposed to sea water or mud, rinse it off with clean fresh water.
• Clean water and sweat from a leather band by wiping with a soft cloth. • Not operating a watch crown, buttons, or rotary bezel could lead to later problems with their operation. Periodically rotate the crown and rotary bezel, and press buttons to maintain proper operation. Dangers of Poor Watch Care Rust • Though the metal steel used for your watch is highly rust-resistant, rust can form if your watch is not cleaned after it becomes dirty.
• Even if the surface of the metal appears clean, sweat and rust in crevasses can soil the sleeves of clothing, cause skin irritation, and even interfere with watch performance. Premature Wear • Leaving sweat or water on a resin band or bezel, or storing your watch 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.
Battery Replacement • Leave battery replacement up to your original retailer or authorized CASIO service center. • Have the battery replaced only with the type specified in the User’s Guide. Use of a different battery type can cause malfunction. • When replacing the battery, also request a check for proper water resistance. • Ornamental resin components may become worn, cracked, or bent over time when subjected to normal daily use.
Low Battery Power • Low battery power is indicated by large timekeeping error, by dim display contents, or by a blank display. • Operation while battery power is low can result in malfunction. Replace the battery as soon as possible.
CASIO COMPUTER CO., LTD.
