Seiko 7N21 Movement Details
Seiko caliber 7N21 is an analog quartz watch movement. Production was in the 1990s.
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Sub-brands: | SUS, Lucent |
Battery: | SR920SW / 371 (Silver oxide) |
Accuracy: | ±15 seconds/month |
Day / date? | No |
GMT / world time? | No |
Chronograph? | No |
Rate: | 32,768 Hz |
PDF guides: | |
Related movements: | 7N22 |