This manual describes the operation of the 5055 watch, including power, time setting, alarm, stopwatch, countdown timer, world time, etc.
The Casio 5055 is a solar‑powered watch with automatic LED illumination, world‑time and daylight‑saving functions, and radio‑controlled time calibration using multiple broadcast signals (DCF77, MSF, WWVB, JJY, BPC). It features a rechargeable battery, multiple alarms, a countdown timer, and a countdown timer.
The manual provides step‑by‑step instructions for charging the watch, selecting the correct city code, setting the time and date, enabling or disabling automatic illumination, using the stopwatch and timer functions, and caring for the battery. Safety warnings and troubleshooting tips are also included. This manual is written in Chinese.
| Power source | Solar cell and rechargeable battery |
|---|---|
| Illumination | Automatic LED (Full Auto LED Light) |
| Charging time in bright sunlight | ≈8 minutes (50 000 lx) |
Place the watch under bright light; the solar cell charges the internal battery. In bright outdoor sunlight (≈50 000 lx) it takes about 8 minutes to fully charge.
No. The watch uses a special rechargeable battery that should not be removed or replaced by the user. Contact an authorized Casio service center for battery replacement.