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Aqua Terra 150M Co‑Axial Chronometer 30 mm

Steel ‑ yellow gold on Leather strap

231.23.30.20.55.002

Note: watch no longer available

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Description

This classic yet robust timepiece represents a tribute to OMEGA’s rich maritime heritage. The dramatic and easily-recognisable dial design of the OMEGA Seamaster Aqua Terra 150M collection recalls the wooden decks of luxury sailboats.

This model features a white mother-of-pearl dial decorated with diamond-set indexes, the Teak Concept pattern and a date window at the 3 o’clock position. A scratch-resistant sapphire crystal protects this unique dial.

The 18K yellow gold bezel is mounted on a 30 mm stainless steel casebody on a white leather strap. This certified chronometer is powered by the OMEGA Co-Axial calibre 8520 which can be seen through the transparent caseback.

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Features

  • Chronometer

  • Date

  • Diamonds

  • Screw‑in crown

  • Transparent case back

Case

  • Total product weight (approx.): 52 g
  • Between lugs: 14 mm
  • Thickness: 12.4 mm
  • Case: Steel ‑ yellow gold
  • Case diameter: 30 mm
  • Water resistance: 15 bar (150 metres / 500 feet)

Dial and Crystal

  • Dial colour: White
  • Crystal: Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides

Strap

  • Strap type: Leather strap
  • Strap color: White
  • Strap surface: Alligator leather
  • Strap underside: Non‑grained calf leather
  • Buckle type: Foldover clasp
  • Buckle material: Steel ‑ yellow gold

Key materials

  • Material - Stainless Steel

    Stainless Steel

  • Material - Diamonds

    Diamonds

  • Material - Mother-of-pearl

    Mother-of-pearl

  • Material - Sapphire Crystal

    Sapphire Crystal

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.

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.

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
  • Frequency 3,5 Hz
Calibre 8520

Variations Aqua Terra 150M Co‑Axial Chronometer 30 mm

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