CITIZEN Eco-Drive Global Radio Controlled Watch JY8010-56E is a global radio-controlled watch that can receive standard radio signals from five radio towers located in China, the United States, Germany and Japan. The watch can also display local and world time simultaneously. When the world time is selected, the watch will automatically receive the standard radio signal from the nearest radio tower to provide accurate time.
The Eco‑Drive Global Radio Controlled Watch Cal.U680 combines solar power with multi‑band radio signal reception, offering accurate timekeeping for local and world cities. It supports signals from Japan (JJY), USA (WWVB), Germany (DCF77) and China (BPC) and includes functions such as world‑time alarms, chronograph, timer and power‑saving modes.
This manual explains how to set and correct the time and calendar, perform automatic or forced radio reception, manage charging and power‑reserve, and use additional features like LED illumination, daylight‑saving adjustments and various display modes. Troubleshooting tips and safety notes are also provided. This manual is written in Chinese.
| Time accuracy | ±15 seconds per month |
|---|---|
| Operating temperature range | 0 °C/32 °F to +50 °C/122 °F |
| Power reserve (no power‑saving) | ≈6 months |
| Power reserve (with power‑saving) | ≈3.5 years |
| Calendar range | Automatic to 31 Dec 2099 |
| Display functions | Local time, UTC, charging level, radio‑signal source |
The watch automatically receives radio signals at 2 a.m., 3 a.m. and 4 a.m.; you can enable or disable this function by setting the mode to “CAL”, “TME” or “RX‑S”.
Pull the crown to the first position, rotate it to the “TME” (time) mode, then use the A and B buttons to adjust hours, minutes and seconds as needed.
With power‑saving off it runs about six months; with power‑saving on it can run up to roughly three and a half years.