This is a user manual for a Casio watch, which introduces the watch's charging method, summer time setting, time setting and other functions.
The Casio 5130 (OC) is a solar‑powered, radio‑controlled watch that can display local time, world time for 29 cities and automatically adjust to daylight‑saving time. It receives time‑calibration signals from stations such as DCF77 (Germany) and WWVB (USA) and includes power‑saving modes.
This manual covers how to charge the watch in light, set the time manually or via radio signal, configure city and DST settings, understand power‑level indicators, and resolve common issues such as low battery or signal loss. This manual is written in Chinese.
| Power source | Solar cell and rechargeable battery |
|---|---|
| Battery life | Up to 6 months on full charge |
| Accuracy (no signal) | ±15 seconds per month |
| Automatic time‑signal reception | Up to 6 times per day |
| Supported time‑signal stations | DCF77 (Germany), MSF (UK), WWVB (USA), etc. |
| World‑time zones | 29 cities |
Place the watch in bright light; the solar cell converts light to electricity and charges the internal battery.
In normal timing mode press and hold the @ button for about five seconds, then use the + and – buttons to adjust hours, minutes, date and year.
Check the power level; if it is below level 2, expose the watch to light to charge the battery. Low power can cause all functions to stop.