Seiko Caliber 8J41Manufacturer Seiko Time Corp. Caliber Number 8J41 Type Quartz Jewels 5 / 7 Vibrations Per Hour 32,768Hz Accuracy +/- 10...Quartz 10
Seiko Caliber 8J42Manufacturer Seiko Time Corp. Caliber Number 8J42 Type Quartz Jewels 5 / 7 Vibrations Per Hour 32,768Hz Accuracy +/- 10...Quartz 20
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