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Seagull
Seagull's complicated automatic caliber featuring moonphase and day-date displays in a single movement. At 6.8mm thick it accommodates the additional moonphase disc mechanism atop the base automatic platform. The 27-jewel count reflects the added complexity, and the moonphase display adds a touch of haute horlogerie to watches priced in the budget segment. Represents the most complicated mass-produced Seagull movement currently available.
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MoonPhase Master collection · 9 watches








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Owners widely praise the Seestern MoonPhase Master Automatic S437-2.SW for its exceptional BGW9 lume, described as a "torch" with a fully lumed bezel insert. The bezel action is noted as clicky and tactile with zero backplay, and the V2 bracelet's upgraded end-links and secure clasp are well-received. One owner found the watch amazing, though they opted to replace the stock strap. Overall, owners rate the Seestern MoonPhase Master Automatic S437-2.SW highly for its impressive lume and well-executed bracelet and bezel.
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