Seiko 4N21 Movement Details
Seiko caliber 4N21 is an analog quartz watch movement. Production was in the 1990s.
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|Battery:||SR516SW / 317 (Silver oxide)
|Day / date?||No|
|GMT / world time?||No|
|Development division:||Daini (Kameido, Tokyo, Japan)|
|Notes:||Used in ladies watches.|