Seiko 8M25 Movement Details

Seiko caliber 8M25 is an analog quartz watch movement. Production was in the 1980s.
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Battery:SR920W / 370 (Silver oxide)
Accuracy:±15 seconds/month
Day / date?No
GMT / world time?No
Rate:32,768 Hz
Number of jewels:4
Size / diameter:25.5mm
Development division:Daini (Kameido, Tokyo, Japan)
Notes:Has an alarm and countdown timer function. This movement only has two hands, with the minute hand being used as the counter for the chronograph and timer functions.
PDF guides: Battery replacement guide : 8M25A & 8M25B
Technical guide
Related movements: 8M26 8M37

Part Codes

Stem code: 351148
Screw codes: 012066