Seiko 0634 Movement Details
Seiko calibre 0634 is a digital watch movement. Production started around 1975.
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| Sub-brands: | LC, SQ |
| Battery: | SR43W / 386 (Silver oxide) |
| Accuracy: | ±10 seconds/month |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | Yes |
| Alarm? | No |
| Rate: | 32,768 Hz |
| Size / diameter: | 27.0mm |
| Height: | 8.5mm |
| Development division: | Suwa (Nagano Prefecture, Japan) |
| Notes: | The world’s first chronograph digital watch. |
| PDF guides: | Technical guide : 0634A |
| Related movements: | 0674 |