This document is a watch manual that introduces the functions, operation methods, and charging time of the watch.
This manual explains how to operate the Casio 3153 solar‑powered watch. It covers power management, including how to charge the watch using sunlight or indoor lighting, and explains the battery‑level indicators and power‑saving mode.
The guide also details all functional settings such as time and date configuration, world‑time cities, stopwatch, countdown timer, multiple alarms, auto‑light operation, and how to use the memory for recorded times. Safety notes for charging and wearing the watch are included. This manual is written in Chinese.
| Charging time in direct sunlight | ≈5 minutes |
|---|---|
| Charging time under indoor fluorescent light | ≈8 hours |
Expose the watch to bright light; charging takes about 5 minutes in direct sunlight or up to 8 hours under indoor fluorescent lighting.
While on any function screen (except setting screens), hold the L button for about 3 seconds to toggle the auto‑light on or off.