Seiko 830 Movement Details
Seiko caliber 830 is an automatic watch movement. Production started around 1963.
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|Day / date?||Day + date|
|GMT / world time?||No|
|Number of jewels:||30|
|Size / diameter:||28.6mm|
|Development division:||Suwa (Nagano Prefecture, Japan)|
|Notes:||Replaced cal. 603, and was replaced by cal. 840.|
|Related movements:||394 603 8305 8306 840|