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Return To ShopThe Seiko 6139A watch movement, which was used from 1975 to 1983, served as a base for modules with additional functions, thanks to its low profile design. It incorporated an automatic module extending into a section opposite to the stem, allowing for a compact overall height. The movement included various features such as automatic winding, stop seconds function, and a sweep seconds hand, as well as a ball-bearing rotor.
The Seiko 6139A features the following functions:
Ronda Reference # | Shock System | Buy |
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Dimensions | GR Reference # | End Type | Buy |
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1.05 x 0.115 x 475 x 10.5 mm | Auto | Buy mainspring |
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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