This document is an operation guide for CASIO watches, providing instructions on how to use the watch correctly and important considerations. The watch is powered by a solar cell and needs to be exposed to light to keep the battery charged. The watch can operate normally when exposed to bright light, but the battery may run down and disable some functions in the absence of light.
This guide introduces the solar‑powered Casio 3722 watch, covering basic handling, power‑saving tips, and the importance of keeping the watch exposed to bright light for battery charging. It also explains the watch’s analog and digital functions, including how the hands behave when battery levels are low.
Detailed sections describe setting the home time zone, receiving the radio‑controlled time calibration signal (both automatically and manually), troubleshooting signal reception, adjusting hand home positions, and using the alarm and auto‑light features. The manual provides step‑by‑step button instructions for each mode.