Instruction manual, introduces the function and operation method of the watch
This manual describes the operation of the Casio 3198 digital watch. It covers basic controls, time‑setting, daylight‑saving adjustments, world‑time city selection, alarm configuration, stopwatch and timer functions, as well as the built‑in LED illumination.
The guide also provides specifications such as accuracy, date range, battery type and illumination duration, and includes a city‑code table for the world‑time feature. This manual is written in Chinese.
| Accuracy (room temperature) | ±30 seconds per month |
|---|---|
| Time format | 12‑hour and 24‑hour |
| Date range | 2000–2099 |
| LED illumination duration | 1.5 s or 3 s |
| Battery | CR2025, approx. 10 years life |
Use the time‑format setting in the time‑function screen to toggle between 12‑hour and 24‑hour modes.
Press the ⑤ key; the illumination lasts for either 1.5 seconds or 3 seconds as set in the illumination settings.