This document introduces the operation instructions of CASIO watch 4304 4305
This manual introduces the Casio 4304/4305 watch, explains how to start the second hand, and describes the button functions used for all modes. It also covers the radio‑controlled timekeeping feature that automatically updates the watch using signals from transmitters in Germany, England, the United States and Japan.
Detailed sections guide you through setting the Home Time Zone, performing auto and manual signal reception, adjusting home positions, and configuring daylight‑saving time. Technical information such as reception ranges, frequency tables, and calendar limits are included for reference.
| Module numbers | 4304 and 4305 |
|---|---|
| Module 4305 GMT offset | -0.0 |
| Year range | 2001‑2098 |
| Reception range (Europe) | ≈1,500 km (800 mi) |
| Frequency (Rugby, England) | 68.0 kHz |
Press the ① button to start the second hand.
In Timekeeping Mode, hold down ① for about five seconds until the current Time Zone appears, then press ① to select the desired zone.
Use the manual receive function by pressing the appropriate button to start a time‑calibration receive operation.