Instruction manual, which introduces the setting and use methods of the watch's timing, alarm, stopwatch, second time and other functions.
This manual explains how to operate the Casio 3125 digital watch. It covers button functions, setting the time and date, choosing 12‑hour or 24‑hour display, and using the alarm, stopwatch, second‑time and backlight features.
The guide also provides technical notes such as the LED display, backlight duration options, automatic calendar handling for years 2000‑2099, and battery‑saving tips. This manual is written in Chinese.
| Display type | LED |
|---|---|
| Backlight duration | 1.5 seconds or 3 seconds |
| Date range | 2000‑2099 |