This manual describes the functions and operations of the watch, including the setting of time, date, and daylight saving time
This manual provides step‑by‑step instructions for operating the Casio 4397 watch. It covers the timing mode, world‑time mode, stopwatch, alarm, lighting, and MUTE functions, as well as how to adjust the local city code, daylight‑saving time and 12/24‑hour formats.
The guide also includes technical details such as the year‑setting range, automatic date adjustment, LED illumination, and battery‑use considerations. A city‑code table is provided for reference to set the correct time zones. This manual is written in Chinese.
| Year setting range | 2000‑2095 |
|---|---|
| Stopwatch display limit | 59 min 59.99 sec |
| LED illumination | Two built‑in LEDs |
| Automatic date adjustment | Auto‑adjusts month length and leap year |
| Battery consumption for lighting | Frequent use of lighting quickly drains battery |