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Return To ShopThe Seiko 2505A is a mechanical watch movement that was commonly used around 1960. It features an indirectly driven minute hand, which allows for a large balance and a low profile design. The movement offers several functions, including automatic winding, a sweep seconds hand, and a day and date display. The day is indicated through a bow-aperture located between the 11 o'clock and 1 o'clock positions, while the date can be set by changing the time to 20:20-24 hours. Additionally, the movement includes a ball-bearing rotor for enhanced efficiency.
The Seiko 2505A features the following functions:
Dimensions | GR Reference # | End Type | Buy |
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1.15 x 0.105 x 360 x 10.5 mm | GR2805X | Auto | Buy mainspring |
1.10 x 0.120 x 320 x 10.5 mm | Auto | Buy mainspring |
Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) | |
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