Operation Guide 10B+7L(Ver.C)
Brand: CASIO
Reading the Display
This section explains how to interpret the watch's display in different modes.
[Regular Timekeeping Mode]
Displays Hour, Minute, Second, AM/PM, Date, and Day. Example: 10:5850 SU 30. Buttons: [L button] for [Light indicator], [C button] cycles through modes, [A button] switches between 12-hour and 24-hour formats.
[Daily Alarm Mode]
Displays the set alarm time. Example: 8:35 [AL indicator]. Indicators: ? (Alarm-on-mark), Mode indicator.
[Stopwatch Mode]
Displays stopwatch time up to 59 minutes 59.99 seconds. Example: 00:0000 [ST indicator]. Indicators: Mode indicator.
[Time/Calendar Setting Mode]
Displays time and date for setting purposes. Example: 10:5850 SU 30. Indicators: [PM indicator], Day.
Day Abbreviations: SU: Sunday, MO: Monday, TU: Tuesday, WE: Wednesday, TH: Thursday, FR: Friday, SA: Saturday.
In regular timekeeping mode, pressing the [A button] switches between 12-hour and 24-hour formats.
Stopwatch Operation
A signal confirms start/stop operation. The working range is limited to 59 minutes 59.99 seconds; for longer times, the stopwatch resets and starts again.
(a) Net Time Measurement
[A button] Start → [A button] Stop (Time loss) → [A button] Re-start → [A button] Stop → [L button] Reset
(b) Split Time Measurement
[A button] Start → [L button] Split → [A button] Split release → [A button] Stop → [L button] Reset
(c) 1st-2nd Place Times
[A button] Start → [L button] Split (The first runner finishes) → [A button] Stop (The second runner finishes. Record the time of the first runner.) → [L button] Split release (Record the time of the second runner.) → [L button] Reset
Setting Daily Alarm
If the daily alarm is set, the buzzer sounds for 20 seconds at the preset time every day until cleared. To stop the buzzer, press the [L button]. If the time signal is set, the watch sounds every hour on the hour.
Sound Demonstration: Press and hold the [A button] in alarm mode to sound the buzzer.
[Hour Setting]
In daily alarm mode, press the [L button] to set the hour. One hour advances with every push of the [A button]. Example Display: AL 8:30
[Minute Setting]
Press the [L button] to set minute digits. One minute advances with every push of the [A button]. Press the [L button] to complete. Example Display: AL 8:35
Note: If the [C button] is pressed, the watch reverts to the regular timekeeping mode.
Quick Digit Advance: When the [A button] is pressed for more than 2 seconds, the digit advances quickly. When released, the digit advance will stop.
Setting Daily Alarm and Time Signal On/Off
This section describes how to enable or disable the daily alarm and the hourly time signal.
- [Alarm-on-mark and time-signal-on-mark appear]: The daily alarm and time signal sound. (Display shows ? and ⏰)
- [Alarm-on-mark and time-signal-on-mark disappear]: The daily alarm and time signal do not sound. (Display is blank)
- [Alarm-on-mark only appears]: The daily alarm only sounds. (Display shows ?)
- [Time-signal-on-mark only appears]: The time signal only sounds. (Display shows ⏰)
Cycle through these settings by pressing the [A button].
Setting Time and Calendar
Follow the setting sequence carefully.
[Regular Timekeeping]
The default display mode.
[Second Adjusting]
Press the [C button] three times to change from regular timekeeping mode to time/calendar setting mode. The seconds will flash. Press the [A button] to adjust seconds.
Note: Precise time can be maintained by correcting the seconds once a month using a time signal from radio, TV, or telephone.
Quick Digit Advance: When the [A button] is pressed for more than 2 seconds, the digit advances quickly. When released, the digit advance will stop.
[Hour Setting]
Press the [L button] to move to the hour setting. Press the [A button] to increase the number.
[Minute Setting]
Press the [L button] to move to the minute setting. Press the [A button] to increase the number.
[Month Setting]
Press the [L button] to move to the month setting. Press the [A button] to increase the number.
[Date Setting]
Press the [L button] to move to the date setting. Press the [A button] to increase the number.
[Day Setting]
Press the [L button] to move to the day setting. Pressing the [A button] advances to the next day. Press the [C button] to complete the setting.
IMPORTANT: Setting sequence MUST BE FOLLOWED when making any new setting.
Correction of any digit, if not required, can be skipped by pressing the [L button] repeatedly.
If you do not operate any button for a few minutes while a selection is flashing, the flashing stops and the watch goes back to the regular timekeeping mode automatically.
Specifications
- Accuracy at normal temperature: ±30 seconds a month
- Display capacity:
- Regular timekeeping mode: Hour, minute, second, am/pm, date and day
- Calendar system: Auto-calendar set at 28 days for February
- Daily alarm mode
- Hourly time signal function
- Stopwatch mode: Measuring capacity: 59 minutes 59.99 seconds; Measuring unit: 1/100th of a second; Measuring modes: Normal time, net time, split time and 1st-2nd place times
- Battery: One lithium battery (type: CR-2016 — except Module 1271/BR-2020 — Module 1271 only). Approx. 7 years operation on type CR-2016 (except Module 1271) / 10 years on type BR-2020 (Module 1271 only). [assuming alarm operation for 20 sec./day and one light operation for 1 sec./day]
NOTE: There is no way unit components can be damaged or malfunction due to misoperation of buttons. If confusing information appears on the display, it means the entry sequence was incorrect. Please read the manual and try again.
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