5131 User Manual, introduce the watch's charging, function settings, power status, etc.
This manual covers the operation of the Casio 5131 watch, including how to set the time, date, and daylight‑saving time, as well as how to select a city code for automatic radio‑signal calibration. It also describes the world‑time function, which can display the time for up to 29 cities.
Additional sections explain the solar‑charging method, power‑saving modes, timer functions, and troubleshooting tips for signal reception and battery level warnings. This manual is written in Japanese.
| Date range | 2000‑2099 |
|---|---|
| Power‑saving levels | 3 levels (functions stop at level 3) |
Select the desired city from the City Code Table and confirm the setting; the watch will then use that city’s code for signal reception.
The built‑in calendar automatically handles dates from the year 2000 through 2099.