Casio 4397/5079 Watch User Manual

About this manual

This manual explains how to use the various functions of the Casio 4397/5079 watch, such as timekeeping, world time, stopwatch, illumination and DST settings. It provides step‑by‑step instructions for each function and details the required button sequences.

The document also includes technical data such as battery type, year‑range settings, time‑format options and LED illumination details, plus a city code table for the world‑time feature. This manual is written in Chinese.

What's inside

• Operation Overview
• Timekeeping Functions
• World Time Function
• Stopwatch Function
• Illumination
• Daylight Saving Time (DST) Settings
• Battery Information
• City Code Table

Specifications

Frequently asked questions

How long does the battery last?

The watch uses an SR726W battery that lasts about two years.

What year range can be set on the watch?

You can set the year from 2000 to 2099.

How do I switch between 12‑hour and 24‑hour time formats?

Press the appropriate button to toggle between 12‑hour and 24‑hour modes.

How many LEDs are used for the watch’s illumination?

The watch has two LEDs for backlight illumination.