This is a user manual for a watch, it introduces the functions and usage methods of the watch.
This manual provides step‑by‑step instructions for using the Seiko U68 Eco‑Drive watch, including how to set local and world time, interpret the charge‑level indicator, and understand the various signal reception functions. It also details safety warnings and maintenance procedures.
The document includes a specifications section that lists the model number, accuracy, temperature range and supported time‑signal sources, as well as a troubleshooting guide for low‑charge warnings and signal reception issues. This manual is written in Japanese.
| Model | U68 |
|---|---|
| Operating Temperature Range | 0 °C to +50 °C |
When the watch is low on charge the second hand jumps each second instead of moving smoothly.
The watch can receive signals from JJY (Japan), WWVB (USA), DCF77 (Germany) and BPC (China).