The Seiko 1F20-5889 watch movement incorporates shock protection, sweep seconds, and operates at a beat rate of 21600 vph.
The Seiko 1F20-5889 features the following functions:
| Ronda Reference # | Shock System | Buy |
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| Dimensions | GR Reference # | End Type | Buy |
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| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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