This is a user manual that introduces the functions and usage of the watch.
This manual explains how to use the Casio 3058/3059 digital watch. It describes each mode—timekeeping, world time, stopwatch, countdown timer, alarm, and lighting—and provides step‑by‑step procedures for setting and adjusting functions.
The guide also includes reference tables such as city codes and daylight‑saving time information, as well as notes on automatic calendar operation, battery considerations, and button‑press sounds. This manual is written in Chinese.
| Display type | White background with black characters or black background with white characters |
|---|---|
| Year setting range | 2000‑2099 |
| Calendar | Fully automatic calendar adjusting month length and leap years |
| Backlight | EL (electroluminescent) panel |
| Stopwatch display limit | 59 minutes 59.99 seconds |
| Countdown timer range | 1 minute to 24 hours |
The watch automatically updates month length and leap‑year dates; after the initial setting, no further adjustment is needed unless the battery is replaced.