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Constellation Co‑Axial Master Chronometer 29 mm

Sedna™ gold on Sedna™ gold

131.55.29.20.99.003

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Description

As part of an exquisite collection of timepieces, this watch combines the iconic Constellation design with a dazzling selection of 940 precious stones totalling 2.52 ct.

The 29 mm case is crafted from 18K Sedna™ gold and is snow-paved with 108 full cut diamonds. Gripping to its sides are the legendary polished claws, along with a bezel that features Roman numeral in positive relief and 160 full cut diamonds.

The astonishing attention to detail is continued on the 18K white gold dial, which is fully paved in a snow setting of 354 single cut diamonds. There is also an 18K Sedna™ gold Constellation star, and most beautifully, a circle of 12 baguette-cut ruby hour markers in 18K white gold holders.

The watch is completed by a brushed and polished mono-rang bracelet, which has 306 full cut diamonds paved in a “Milky Way” pattern, as well as a butterfly clasp and easy comfort-adjustment. Behind the sapphire crystal on the caseback sits the OMEGA Co-Axial Master Chronometer Calibre 8703.

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5-Year Warranty

All OMEGA watches are delivered with a 5-year warranty that covers the repair of any material or manufacturing defects. Please refer to the operating instructions for specific information about the warranty conditions and restrictions.

Features

  • Anti‑magnetic

  • Automatic watch

  • Chronometer

  • Diamonds

  • Master Chronometer Certified

  • Sedna Gold™

  • Transparent case back

Technical Data

  • Between lugs: 17.6 mm
  • Bracelet: Sedna™ gold
  • Case: Sedna™ gold
  • Case diameter: 29 mm
  • Dial colour: White
  • Crystal: Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
  • Water resistance: 5 bar (50 metres / 167 feet)

The advantages
of this watch

Inside this timepiece are the revolutionary components that guarantee the highest standards of performance. From the Co-Axial escapement for long-lasting precision, to the silicon balance spring for superior anti-magnetism, OMEGA has conquered every challenge that matters.

Key materials

  • Material - Sedna<sup>TM</sup> Gold

    SednaTM Gold

  • Material - Diamonds

    Diamonds

  • Material - Sapphire Crystal

    Sapphire Crystal

SednaTM Gold

OMEGA has been using the exclusive 18K SednaTM Gold, its own fiery rose gold alloy, since 2012. Named after Sedna, an orbiting planetoid that has been described as one of the reddest in the solar system, SednaTM Gold not only bears all the standard characteristics of other 18K golds, but it also offers high resistance to the fading of colour and lustre over time. Its unique composition includes copper and palladium for colour and stability.

Diamonds

Diamond is recognised as the hardest material on Earth, graded 10 on the Mohs hardness scale, and is the only gem made entirely of carbon. In nature, it can only be formed under high temperature and pressure conditions that exist within a specific depth range (~100 miles) beneath the Earth's surface. To decorate its timepieces and jewellery, OMEGA uses "Top Wesselton" white COLOUR diamonds with CLARITY ranging from pure to VVS (Very Very Small inclusions). Along with choosing the best weight in CARAT, the CUT is also carefully selected in order to maximise brightness and scintillation. It goes without saying that OMEGA is a certified member of the non-profit Responsible Jewellery Council (RJC), assuring customers that its processes involving people, materials and the environment are ethical and fair.

Sapphire Crystal

To really appreciate the finer details of a timepiece, OMEGA uses synthetic sapphire crystal with a highly scratch-resistant and anti-reflective treatment. Before the machining and finishing processes take place, the sapphire crystals are produced under the Verneuil process, also called flame fusion. It involves the melting of the raw substance using oxyhydrogen flame and the crystallisation of the melted droplets to form a cylinder. Graded 9 on the Mohs-hardness scale (graded 1-10), the resulting sapphire crystals are virtually scratch-proof and very hard, ensuring an unhindered vision at all times.

Movement CALIBRE OMEGA 8703

Omega 8703

Self-winding movement with Co-Axial escapement. Certified Master Chronometer, approved by METAS, resistant to magnetic fields reaching 15,000 gauss. Free sprung-balance with silicon balance spring, automatic winding in both directions. 18K Sedna™ gold rotor and balance bridge and luxury finish with Geneva waves in arabesque.

  • 50 hours Power reserve
  • Self winding
Omega 8703

Variations Constellation Co‑Axial Master Chronometer 29 mm

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