This document describes the features and characteristics of the CASIO MA1005-CkA watch, including radio wave timing function, charging method, and power level display.
The Casio 5122MA1005-CkA is a solar‑powered wristwatch that offers time‑signal synchronization, multiple display modes, a stopwatch, world‑time, and an alarm. The manual explains how to charge the watch, configure local and world‑time cities, and adjust settings such as daylight‑saving time.
It also covers troubleshooting steps for low power, signal reception problems, and pointer misalignment, plus detailed specifications of the watch’s accuracy, power source, calendar range and supported radio‑time signals. This manual is written in Chinese.
| Time accuracy (no signal) | ±15 seconds per month |
|---|---|
| Power source | Solar cell with rechargeable battery |
| Battery life (full charge, no light) | ≈5 months |
| Calendar range | 2000‑2099 (full‑automatic) |
| Supported time‑signal frequencies | 77.5 kHz (DCF77), 60 kHz (MSF, WWVB, JJY), 68.5 kHz (BPC) |
| Stopwatch measurement limit | 23 min 59.999 s |
Enter the manual‑setting mode by pressing the A button, then use the D (+) and B (–) buttons to adjust hours, minutes, year, month and date as described in the “时间及日期的手动设定” section.