
Ref. U18 · Diver
Sellita
A slim Swiss automatic from Sellita, a pin-compatible alternative to the ETA 2892-A2, beating at 28,800 vph with roughly 42–56 hours of power reserve. Favoured by brands needing a thinner movement than the SW200.
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3 colorways
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Sinn on the secondhand market
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Divers as a group: +6.5% · 339 matched watches
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The community take
The Sinn U18 is praised for its unique deep blue/green dial with three-dimensional oxygen bubbles that change with light, and its comfortable, easily adjustable bracelet. Owners find the watch stunning and a piece of history, appreciating the refined hands. The Sinn U18 features a 44mm, 15.5mm thick case made from German submarine steel, offering a 2000-meter dive specification and Sinn's Ar-Dehumidifying technology, powered by a Sellita SW300-1 movement. The case thickness is apparent, and the watch comes as a complete set with box and papers for $3,000-$3,680. On balance, owners and reviewers rate the Sinn U18 highly for its striking dial and robust build.
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