Casio Watch User Manual

General Description

Use button "C" to switch between modes. Pressing button "C" after an operation in any mode returns to the Timekeeping Mode. Press button "D" for the backlight in any mode.

Timekeeping Mode

Diagram: Shows the watch display with "SU 6-30 10:5850" and labels for buttons A, B, C, D, indicating the current time.

How to Set Time and Date

1. Press button "A" in Timekeeping Mode. The seconds digits will flash, indicating they can be changed.
2. Press button "C" to cycle through the digits to be changed in the following order: Seconds, Minutes, Hours, Day, Month, Year.
3. While the seconds digits are flashing (and can be changed), press button "B" to reset them to "00". If the seconds value is between "30" and "59" when "B" is pressed, the minutes will increment by one. If the seconds value is between "00" and "29", the minutes will remain unchanged.
4. While digits in any other position (except seconds) are flashing (and can be changed), press button "B" to increase their value. Holding down button "B" allows for faster adjustment. Press button "D" to switch between 12-hour and 24-hour formats.
5. After setting the time and date, press button "A" to return to the original Timekeeping Mode.

The day of the week is set automatically according to the date. The date can be set from January 1, 1995, to December 31, 2039. If no button is pressed for several minutes while digits are flashing, the flashing will stop, and the watch will automatically return to the Timekeeping Mode.

Backlight

If the backlight function is enabled, the watch display will flash and illuminate during timer, alarm, or hourly signals. At any time, pressing button "D" will illuminate the display for approximately 2 seconds, regardless of whether the backlight function is enabled or not. The backlight uses an electroluminescent source, which may lose its luminous intensity with prolonged use. Frequent use of the backlight shortens battery life.

How to Enable/Disable Backlight Function

Press and hold button "B" in Timekeeping Mode for one or two seconds to enable or disable the backlight function. When the backlight function is enabled, a backlight indicator appears on the display. This indicator remains visible in all modes until the function is disabled. This procedure only controls the backlight function and does not affect sound signals or tones. A sound may be heard when the backlight illuminates; this is normal and due to transistor activity.

Alarm and Hourly Signals

Diagram: Shows the alarm display "AL 6-30 12:00" with indicators for alarm and hourly chime connection, and labels for buttons B, D.

You can set the alarm time by specifying the hour, minute, month, and day. If the alarm is enabled, it will sound for 20 seconds at the set time. If the hourly chime is enabled, it will sound at the start of each hour.

Types of Alarm Signals

• Daily Alarm: Set the hour and minute for the desired alarm time. Set the month to "-" and the day to "- -". Alarms will sound daily at the set time.
• Specific Date Alarm: Set the month, day, hour, and minute for the desired alarm time and date. The alarm will sound at the specified time on the specified day.
• Monthly Alarm: Set the month, hour, and minute for the desired alarm time. Set the day to "-". The alarm will sound daily within the specified month at the set time.
• Specific Day of Month Alarm: Set the day, hour, and minute for the desired alarm time and date. Set the month to "-". The alarm will sound once a month on the specified day at the set time.

How to Set Alarm Time

1. Press and hold button "A" in Alarm Mode until the hour digits flash. This also automatically enables the alarm setting.
2. Press button "C" to cycle through the digits to be changed: Hour, Day, Minute, Month.
3. Press button "B" to increase the value of the flashing digits. Holding button "B" allows for faster adjustment. The 12-hour or 24-hour format matches the setting in Timekeeping Mode. Be mindful of AM/PM when using the 12-hour format.
4. After setting the alarm time, press button "A" to return to Alarm Mode. The watch will automatically return to Alarm Mode if no button is pressed for several minutes.

How to Stop Alarm Sound

Press any button to stop the alarm sound.

How to Enable/Disable Alarm and Hourly Chime Settings

Press button "B" in Alarm Mode to cycle through the states of the alarm and hourly chime settings: Both disabled, Alarm only enabled, Hourly chime only enabled, Both enabled.

Timer Mode

Diagram: Shows the timer display "ST 10:58 0:0000" with labels for buttons A, B, C, indicating the timer function.

The countdown time can be set from 1 second to 24 hours. When the timer reaches zero, a signal will sound for 10 seconds, unless any button is pressed. After the sound, the countdown stops, and the previously set time is restored.

How to Set Timer Time

1. Press button "A" in Timer Mode. The hour digits will flash, indicating they can be changed.
2. Press button "C" to cycle through the digits to be changed: Hour, Minute, Second.
3. Press button "B" to increase the value of the flashing digits. Holding button "B" allows for faster adjustment. To set the timer for 24 hours, set it to "0:00 00".
4. After setting the timer time, press button "A" to return to Timer Mode. The watch will automatically return to Timer Mode if no button is pressed for several minutes.

   How to Use Timer

   1. Press button "B" in Timer Mode to start the timer.
   2. Press button "B" again to stop the timer. You can resume timer operations by pressing button "B" again.
   3. Stop the timer, then press and hold button "A" until the timer time is reset to the initial setting.

   Without the auto-repeat function, after the timer reaches zero, it sounds for 10 seconds (unless interrupted). After the sound, the countdown stops, and the previously set time is restored.

   How to Enable/Disable Auto-Repeat Function

   1. Press button "A" in Timer Mode. The hour digits will flash.
   2. Press button "D" to enable or disable the auto-repeat function. An auto-repeat indicator appears on the display when enabled.
   3. Press button "A" to return to Timer Mode.

   With the auto-repeat function enabled, after the timer reaches zero, it sounds, the set time is restored, and the countdown restarts. You can stop the countdown by pressing button "B" and manually reset the timer to its initial state using button "A".

Stopwatch Mode

Diagram: Shows the stopwatch display "ST 10:58 00000" with labels for buttons B, C, indicating stopwatch functions.

The stopwatch mode allows you to measure elapsed time, split times, and record the first two results in competitions. The maximum measurable time is 23 hours, 59 minutes, 59.99 seconds.

How to Measure Elapsed Time

1. Press button "B" to start the stopwatch.
2. Press button "B" to stop the stopwatch. You can resume the measurement by pressing button "B" again.
3. Press button "A" to reset the stopwatch to zero.

For the first 60 minutes, the display shows minutes, seconds, and hundredths of a second. After 60 minutes, the display format changes to show hours, minutes, and seconds.

How to Measure Split Time

1. Press button "B" to start the stopwatch.
2. Press button "A" to display the split time (time from the start of the event to this moment). The stopwatch continues internal timekeeping.
3. Press button "A" again to clear the split time display and resume showing the total elapsed time. Steps 2 and 3 can be repeated as needed.
4. Press button "B" to stop the time measurement.
5. Press button "A" to reset the stopwatch to zero.

How to Record 1st/2nd Place Times in Competitions

1. Press button "B" to start the stopwatch.
2. Press button "A" when the first athlete crosses the finish line to record their time.
3. Press button "B" when the second athlete crosses the finish line.
4. Press button "A" to display the second athlete's time.
5. Press button "A" again to reset the stopwatch to zero.

Product Information

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