Seiko 8121 Movement Details

Seiko caliber 8121 is an analog quartz watch movement.
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Sub-brands: Chronos
Battery:SR1120SW / 381 (Silver oxide)
Accuracy:±15 seconds/month
Day / date?No
GMT / world time?No
Chronograph?No
Development division:Suwa (Nagano Prefecture, Japan)
Notes:The same as cal. 8122 but without date display.
Related movements: 8122 8123