Seiko A257 Movement Details
Seiko caliber A257 is a digital watch movement. Production was in the 1980s.
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| Sub-brands: | Silverwave |
| Battery: | SR927W / 395 (Silver oxide) |
| Accuracy: | ±15 seconds/month |
| Day / date? | Day + date |
| GMT / world time? | No |
| Chronograph? | Yes |
| Alarm? | Yes |
| Rate: | 32,768 Hz |
| Size / diameter: | 28.0mm |
| Height: | 4.9mm |
| Development division: | Daini (Kameido, Tokyo, Japan) |
| PDF guides: | Technical guide : A257A |