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Return To ShopThe Seiko 1E20-3B80 watch movement is a self-winding mechanical movement that is entirely developed and manufactured by Rolex. It has been certified as a Swiss chronometer, indicating that it has undergone rigorous testing by the Swiss Official Chronometer Testing Institute (COSC) and demonstrated high precision. The 3135 movement is equipped with a Parachrom hairspring, which provides improved shock and temperature resistance. Its reliable architecture is consistent with all Oyster watch movements.
Dimensions | GR Reference # | End Type | Buy |
---|---|---|---|
1.18 x 0.115 x 455 x 11.2 mm | Auto | Buy mainspring |
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