The Casio 5122 is a solar‑powered, radio‑controlled watch with multiple modes such as time‑keeping, world‑time, stopwatch and alarm. It features a built‑in rechargeable battery that stores energy from light.
This manual covers how to charge the watch, configure local and world city settings, receive radio time signals (automatic or manual), set time and date, use the alarm and stopwatch, manage power‑saving modes, and resolve common issues. This manual is written in Chinese.
| Power source | Solar cell and rechargeable battery |
|---|---|
| Battery life (no light) | ≈5 months |
| Calendar range | 2000‑2099 automatic calendar |
| Time accuracy (no signal) | ±15 seconds per month |
Place the watch where it receives bright light; the solar cell converts light to electricity and charges the internal battery.
Enter setting mode by holding button ④, then use buttons ① and ③ to adjust hours and minutes, and press ④ to exit.