This manual introduces the use of the CASIO watch, including time and date setting, stopwatch function, countdown timer, alarm and hourly chime, world time use and lighting.
This manual explains how to operate the Casio 3166 watch, covering basic functions such as time and date setting, stopwatch, world time, lighting, and battery‑low warnings. It also includes safety notes and warranty information.
The guide is organized into sections that describe each feature, provide step‑by‑step procedures, and list part descriptions. Users can refer to the operation guide and part description sections for quick reference while using the watch. This manual is written in Japanese.
It means the battery power is low and the watch may lose functions; replace the battery when the warning appears.
Use the time and date setting function described in the manual to adjust the watch’s clock and calendar.