Seiko A257 Movement Details

Seiko caliber A257 is a digital watch movement produced in the 1980s.

Sub-brands: Silverwave
Battery:SR927W / 395 (Silver oxide)
Accuracy:±15 seconds/month
Day / date?Day + date
GMT / world time?No
Chronograph?Yes
Rate:32,768 Hz
Size / diameter:28.0mm
Height:4.9mm
Development division:Daini (Kameido, Tokyo)
Notes:Has an alarm.
PDF guides: Technical guide for A257A