![Omega Speedmaster Moonwatch 1861 Hesalite 311.30.42.30.01.005 Discontinued 2019 [Preowned] yachtmaster No functional movement distinction from](https://cdn.shopify.com/s/files/1/0162/6927/9296/products/311.30.42.30.01.005.png?v=1779870833)
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No functional movement distinction from the Submariner Date — the Sea-Dweller's technical superiority lies in case construction and depth rating
The movement is equipped with a cam-driven chronograph module and a 50-hour power reserve
Fitting Can fit up to 47mm watches Package includes Watch Box and Paper Packaging Box
and featuring a soft-iron inner case for protection against magnetic fields
Speedmaster Chronoscope "Paris 2024" 43mm
Omega Speedmaster Moonwatch 1861 Hesalite 311.30.42.30.01.005 Discontinued 2019 [Preowned] yachtmaster No functional movement distinction fromOverview When Omega replaced the Calibre 1861 with the 3861 in 2020, the upgrade was genuine Co Axial escapement, METAS Master Chronometer certification, 15,000 gauss magnetic resistance. What changed alongside it was the movement's lineage: the 1861 is derived directly from the Lemania 1873 bauche that powered the watch worn during Apollo 11 in 1969; the 3861 is a new design. The 311. 30. 42. 30. 01. 005 is the final production generation of the
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