Seiko 2C21 Movement Details

Seiko caliber 2C21 is an analog quartz watch movement produced in the 1980s.
Search eBay for watches with this movement.

Battery:SR521SW / 379 (Silver oxide)
Accuracy:±15 seconds/month
Day / date?No
GMT / world time?No
Chronograph?No
Number of jewels:2
Size / diameter:15.1mm
Height:2.4mm
Stem code: 351225, 351226, 351227
Development division:Daini (Kameido, Tokyo)
Notes:The same as cal. 2C20 but with a seconds hand and battery life indicator function.
PDF guides: Technical guide for 2C20A & 2C21A
Related movements: 2C20