This manual provides instructions for operating the Casio 5105 watch. It covers how to keep the solar‑powered battery charged, how to set the time, date, city codes, daylight‑saving time, and how to use the various modes such as stopwatch, countdown timer and alarms.
Safety and maintenance information is also included, describing the power‑saving function, automatic illumination, and how to calibrate the hands if they become misaligned. This manual is written in Chinese.
| Monthly accuracy | ±15 seconds |
|---|---|
| Digital time display | hours, minutes, seconds, AM/PM, month, day, weekday |
| Time format | 12‑hour and 24‑hour |
| Calendar range | 2000‑2099 (full‑auto) |
| Battery life (full charge) | ≈8 months |
| Stopwatch display limit | 23 h 59 min 59.99 s |
| Countdown timer range | 1 min – 60 min |
Press the appropriate button (ON or OFF) in the power‑saving menu to turn the function on or off.