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Constellation Co‑Axial Chronometer 31 mm

Steel ‑ red gold on Steel ‑ red gold

123.20.31.20.05.001

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Description

The especially dramatic and enduring design concept of the OMEGA Constellation line is characterized by its famous “Griffes”, or claws, and striking dials.

This model features a white mother-of-pearl dial with a date window at the 3 o'clock position and a scratch-resistant sapphire crystal. The 18K red gold bezel, with its engraved Roman numerals, is mounted on a 31 mm stainless steel casebody, and is presented on a stainless steel and 18K red gold bracelet.

At the heart of this timepiece is the OMEGA Co-Axial calibre 8520, visible through the transparent caseback.

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Features

  • Chronometer

  • Date

  • Transparent case back

Technical Data

  • Between lugs: 19 mm
  • Bracelet: Steel ‑ red gold
  • Case: Steel ‑ red gold
  • Case diameter: 31 mm
  • Dial color: White
  • Crystal: Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
  • Water resistance: 10 bar (100 metres / 330 feet)

Key materials

  • Material - Red Gold

    Red Gold

  • Material - Stainless Steel

    Stainless Steel

  • Material - Mother-of-pearl

    Mother-of-pearl

  • Material - Sapphire Crystal

    Sapphire Crystal

Red Gold

Gold in its pure form (24K) is slightly reddish yellow and very soft. It is usually alloyed with other base metals for a diverse variety of uses. Considered to be the premium standard in watch and jewellery making, 18K gold (with at least 75% pure gold) provides the ultimate balance between purity and usefulness. Traditional 18K red gold is alloyed with copper-silver and offers an excellent resistance to corrosion, while being highly bio-chemically inert. It provides a beautiful hue that suits wearers even with sensitive skin.

Stainless Steel

Stainless steel is certainly the most conventional of watchmaking materials for outer craftsmanship, and offers beauty, strength and affordability. OMEGA uses 316L stainless steel. Known for its corrosion-resistance and high lustre after polishing, this material is often the ideal choice for watches in both daily-use and high-stress situations such as diving and adventure.

Mother-of-pearl

Also known as "nacre", mother-of-pearl is an organic-inorganic composite material produced by some molluscs as an inner shell layer, similar to pearls. It is strong, resilient and iridescent, with changing colours depending on the wavelengths of light at different viewing angles. Produced with exquisite skill and delicacy, OMEGA's ladies' collection offers mother-of-pearl dials of top quality, enhanced with specific attributes.

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 8520

Calibre 8520

Self-winding movement with Co-Axial escapement. Free sprung-balance system with silicon balance-spring. Automatic winding in both directions. Rhodium plated finish with exclusive Geneva waves in arabesque.

  • 50 hours Power reserve
  • Self winding
Calibre 8520

Variations Constellation Co‑Axial Chronometer 31 mm

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