Omega Constellation Co‑axial Chronometer 35 Mm 123.20.35.20.52.001
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Omega's calibre 2500 is a notable movement in the brand's history. Introduced in 1999, it was the first Omega movement to feature the Co-Axial escapement, developed by renowned watchmaker George Daniels. This technology significantly reduces friction in the movement, improving accuracy, and longevity. The calibre 2500 is based on the ETA 2892-A2, a well-respected automatic movement, but with Omega’s enhancements. It operates at 25,200vph, a slight adjustment from the standard 28,800 vph, optimising it for the Co-Axial escapement. Over the years, the movement underwent various improvements, resulting in different versions such as 2500A, 2500B, 2500C, and the most refined, 2500D. This movement has been used in several Omega collections, including the Constellation, Seamaster and De Ville, contributing to Omega’s reputation for precision and innovation.
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