Seiko 2C21 Movement Details

Seiko caliber 2C21 is an analog quartz watch movement. Production was in the 1980s.
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Battery:SR521SW / 379 (Silver oxide)
Accuracy:±15 seconds/month
Day / date?No
GMT / world time?No
Number of jewels:2
Size / diameter:15.1mm
Development division:Daini (Kameido, Tokyo, Japan)
Notes:The same as cal. 2C20 but with a seconds hand and battery life indicator function.
PDF guides: Technical guide : 2C20A & 2C21A
Related movements: 2C20

Part Codes

Stem code: 351225, 351226, 351227
Screw codes: 012490, 012796, 012799, 012820