Seiko 5S21 Movement Details
Seiko caliber 5S21 is an analog quartz watch movement. Production started around 1988.
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|Battery:||SR920SW / 371 (Silver oxide)
|Day / date?||No|
|GMT / world time?||No|
|Number of jewels:||7|
|Size / diameter:||19.0mm x 22.0mm|
|Development division:||Suwa (Nagano Prefecture, Japan)|
|Notes:||Unusually for quartz movements, this has a sweeping seconds hand.|