This manual provides safety precautions, usage instructions, and specifications for the SEIKO QM-11 Quartz Chronometer.
The SEIKO QM-11 is a high-precision quartz chronometer designed to maintain accurate time under harsh environmental conditions. It features a wooden frame case, making it suitable for use as a standard clock in various settings, including on ships. The device is equipped with a secondary battery to ensure continuous operation for approximately 40 hours after the main dry batteries run down. This manual is written in Japanese.
| Daily accuracy at 25°C | ±0.1 seconds |
|---|---|
| Daily accuracy at 0°C~40°C | ±0.2 seconds |
| Second hand movement | 0.5-second intervals |
| Water resistance | IPX3 (JIS 3rd class) |
| Operating time on secondary battery | Approximately 40 hours |
| Battery life | Approximately 1 year |
Only LR20/D alkaline or R20/D manganese dry batteries should be used.
No, do not mix old and new batteries together.
The chronometer continues to operate for about 40 hours using an internal secondary battery.