Seiko V657 Movement Details

Seiko caliber V657 is an analog quartz watch movement.

Battery:SR920SW / 371 (Silver oxide)
Accuracy:±20 seconds/month
Day / date?Date only
GMT / world time?No
Chronograph?Yes
Hacking?Yes
Rate:32,768 Hz
Number of jewels:0
Size / diameter:28.8mm
Height:3.7mm
Stem code: 351892 (tap 11)
PDF guides: Technical guide for V657A
Related movements: V653