Seiko 5931 Movement Details
Seiko caliber 5931 is a high grade analog quartz watch movement. Production was in the 1980s.
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|Battery:||SR721SW / 362 (Silver oxide)
|Day / date?||No|
|GMT / world time?||No|
|Number of jewels:||6|
|Size / diameter:||22.0mm|
|Development division:||Daini (Kameido, Tokyo, Japan)|
|Notes:||The same as cal. 5932 but without a date display. Has a battery life indicator function where the seconds hand moves at two second intervals when the battery is running low.|