Seiko 9S51 Movement Details

Seiko caliber 9S51 is a high grade automatic (with hand winding) watch movement. Production started around 1998.
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Sub-brands: Grand Seiko
Power reserve:50 hours
Accuracy:+5/-3 seconds/day (Seiko "AA" standard)
Day / date?No
GMT / world time?No
Rate:28,800 bph
Number of jewels:24
PDF guides:
Related movements: 8L21