This manual explains how to use a CASIO watch. The watch's solar cell can charge in the light. The watch will run out of battery in a dark environment and some of its functions will stop. If the battery runs out, you will need to reconfigure the watch's settings after charging it. To ensure that the watch operates properly, it is necessary to expose it to light as much as possible.
This manual explains how to operate the Casio 3127MO0711‑ChA solar‑powered watch. It covers basic usage, charging the internal solar cell, and the functions of the timer, stopwatch, world‑time, alarms, illumination, and power‑saving modes.
Detailed sections describe how to select a resident city, receive the Chinese time‑calibration signal (BPC), configure daylight‑saving time, and troubleshoot signal‑reception problems. Safety warnings for automatic illumination and battery handling are also included. This manual is written in Chinese.
| Power source | Solar cell with rechargeable secondary battery |
|---|---|
| Charging time (bright sunlight) | ≈5 minutes |
| Charging time (indoor fluorescent) | ≈50 minutes |
| Illumination duration | 1.5 seconds per activation |
| Alarm sound duration | ≈10 seconds per alarm |
| Signal reception time per day | ≈10 minutes |
| Display active / sleep cycle | 18 h active, 6 h sleep |