Instruction manual, which introduces the usage methods of functions such as timing, world time, alarm, stopwatch and countdown timer.
This manual provides step‑by‑step instructions for operating the Casio 3137 1MA0804‑ChA digital watch. It covers basic functions such as time and date setting, LED illumination, and button operation sounds.
Advanced features are described in detail, including world‑time for up to 30 cities, daylight‑saving time (DST) settings, five daily alarms with an hourly chime, a stopwatch with a 23 h 59 m 59.99 s range, and a countdown timer that can be set from 1 minute to 24 hours. This manual is written in Chinese.
| Stopwatch range | 23 h 59 m 59.99 s |
|---|---|
| Countdown timer range | 1 minute to 24 hours |
| Date setting range | 2000‑01‑01 to 2099‑12‑31 |
| Automatic calendar | Adjusts month length and leap years automatically |
| LED illumination | Two LEDs for backlight |
| World‑time cities | Up to 30 cities (29 time zones) |
| Daylight‑saving time (DST) | Supported |
While in the alarm screen, select the desired alarm with the D button, then press A to toggle it on (indicator appears) or off (indicator disappears).
The stopwatch can measure up to 23 hours 59 minutes 59.99 seconds before it rolls over to zero.