The Citizen B51 light-powered watch user manual provides instructions for component identification, charging, time/date setting, and timer adjustments.
This manual describes the components of the Citizen B51 light-powered watch, including the hour, minute, and second hands, crown positions, and buttons. It explains how the watch can be charged by exposure to light or by swinging the arm while wearing it.
Detailed operating procedures cover setting the time, adjusting the date (with warnings about specific time windows), and resetting the timer seconds hand. The guide also includes tips for proper charging and troubleshooting steps when the timer does not return to zero. This manual is written in Chinese.
| Charging swing frequency | 2‑2.5 Hz |
|---|---|
| Effective charging distance | 20‑25 cm |
| Swings required to restart | 300‑500 swings |
By swinging the arm at a frequency of 2‑2.5 times per second within a 20‑25 cm range; about 300‑500 swings are needed to restart the watch.
Do not adjust the date when the watch displays a time between 9:00 PM and 1:00 AM, as the date change may be incorrect.