Seiko 830 Movement Details

Seiko caliber 830 is an automatic watch movement. Production started around 1963.
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Sub-brands: Seikomatic
Day / date?Day + date
GMT / world time?No
Rate:18,000 bph
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