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Seiko 21B
Frequency: 21600 vph
The Seiko 21B watch movement features an adjustable stud holder, providing enhanced precision and accuracy to its timekeeping. It is equipped with shock protection, ensuring durability and resilience against external impacts. The movement operates at a beat rate of 21600 vph.
The Seiko 21B features the following functions:
- Adjustable Stud Holder
- Shock Protection
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
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Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
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Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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Documents
Parts Listing
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