This is the instruction manual for the CASIO watch. It mainly introduces the functions and usage methods of the watch, including radio atomic timekeeping, world time, stopwatch, countdown timer, alarm, illumination, power, timing, and pointer reference position calibration.
This manual provides the necessary instructions to operate the Casio 5054 watch. It explains how the built‑in solar cell charges the battery, the importance of exposing the watch to light, and the power‑saving mode that blanks the display when the battery is low.
The guide also lists all functions of the watch, including the operation overview, alarm settings, world‑time and daylight‑saving adjustments, and how to configure the watch for different time zones. This manual is written in Chinese.
The blank display indicates that the power‑saving function has turned off the screen to conserve battery.