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The Seiko 2A23B watch movement incorporates shock protection, sweep seconds, and is equipped with either 17 or 21 jewels.
The Seiko 2A23B features the following functions:
| Ronda Reference # | Shock System | Buy |
|---|
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.60 x 0.070 x 240 x 6.5 mm | GR4428 | Manual | Buy mainspring |
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
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