Seiko 5Y31 Movement Details

Seiko caliber 5Y31 is an analog quartz watch movement produced in the 1990s.

Battery:SR920SW / 371 (Silver oxide)
Accuracy:±20 seconds/month
Day / date?No
GMT / world time?No
Rate:32,768 Hz
Number of jewels:1
Size / diameter:23.3mm (19.0mm x 21.0mm)
Stem code: 351670 (tap 11)
Notes:The same as cal. 5Y30 but with a seconds hand.
PDF guides: Technical guide for 5Y22A, 5Y23A, 5Y30A, 5Y31A, 5Y32A & 5Y39A
Related movements: 5Y22 5Y23 5Y30 5Y32 5Y39