
Omega
Constellation Co-Axial Master Chronometer 29
131.20.29.20.05.001
Refined two-tone elegance meets Master Chronometer precision at 29 mm.
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Overview
The Omega Constellation Co-Axial Master Chronometer 29 (ref. 131.20.29.20.05.001) is a dress watch conceived for the smaller wrist, pairing a 29 mm steel and Sedna gold case with a luminous mother-of-pearl dial. It sits within Omega's long-running Constellation line, which has historically balanced feminine design sensibility with serious horological credentials. The reference represents the collection's contemporary expression of that philosophy, anchored by METAS-certified movement technology.
History
The Constellation line traces its origins to the 1950s, establishing Omega's reputation for precision timekeeping in an elegant package. The modern Co-Axial Master Chronometer generation, introduced in the mid-2010s, brought the range into alignment with Omega's highest in-house standards, incorporating the Co-Axial escapement and full METAS certification. This 29 mm reference entered production in 2018, offering the Master Chronometer standard in a case size tailored to a broader range of wearers. The pairing of steel with Sedna gold — Omega's proprietary rose-gold alloy — continues a Constellation tradition of refined two-tone aesthetics.
Notable points
- Calibre 8700 is METAS-certified to Master Chronometer standards, guaranteeing accuracy of 0 to +5 seconds per day and resistance to magnetic fields of at least 15,000 gauss.
- The Co-Axial escapement reduces friction and wear compared to a traditional lever escapement, contributing to long-term rate stability.
- Sedna gold is Omega's proprietary 18-carat rose-gold alloy, engineered for enhanced colour retention over time.
- The mother-of-pearl dial is a natural material, meaning each example carries a subtly unique surface pattern.
- At 29 mm, the case diameter places this reference among the more compact expressions of the Constellation Co-Axial Master Chronometer family.
Specifications
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