This manual describes how to use the watch. It covers the following topics: Atomic timekeeping, stopwatch, countdown timer, world time, alarm, local city and DST, manual time and date setting, pointer calibration, manual hand correction, power supply, reference information, specifications, operating precautions, and user maintenance.
This manual explains how to operate the Casio 5040 watch, including setting the time and date, using the power‑saving function, and maintaining the watch. It emphasizes the importance of exposing the watch to bright light so the built‑in solar cell can charge the battery and keep the watch running.
The guide also covers what to do when the hands stop moving, how to reset settings after the battery is depleted, and provides a city code table for UTC offset adjustments. Users are advised to keep the manual for future reference. This manual is written in Chinese.