Seiko 8221 Movement Details

Seiko caliber 8221 is an analog quartz watch movement produced in the 1980s.
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Sub-brands: Silverwave
Battery:SR936SW / 394 (Silver oxide)
Accuracy:±15 seconds/month
Day / date?No
GMT / world time?No
Chronograph?No
Hacking?Yes
Number of jewels:4
Size / diameter:24.0mm
Screw codes: 022256, 022744
Development division:Suwa (Nagano)
Notes:The same as cal. 8222 but without date display.
Related movements: 8222 8223