This document is an instruction manual for CASIO products, which describes the features and characteristics of the product, including the clock signal sources used and the supported standard time settings.
The manual begins with pre‑use notices and explains how to place the watch in bright light before first use. It then describes the power‑saving function that automatically stops the hands when the watch is kept in darkness, as well as solar charging and automatic time synchronization based on the selected residence city.
Further sections cover the timer and world‑time functions, detailed operation steps, troubleshooting tips, and maintenance advice to keep the watch in good condition. This manual is written in Japanese.