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Aqua Terra 150M Co‑Axial Chronometer Chronograph 44 mm

Steel on Leather strap

231.13.44.50.02.001

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 silver dial decorated with the Teak Concept pattern and a date window. Thirty-minute and 12-hour recorders, and a small seconds dial can be found at the 3, 6 and 9 o’clock positions, respectively.

A scratch-resistant sapphire crystal protects this unique dial. The bezel is mounted on a 44 mm stainless steel case on a brown leather strap. This certified chronometer is powered by the Co-Axial calibre 3313 which can be seen through the transparent caseback.

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Features

  • Chronograph

  • Chronometer

  • Date

  • Screw‑in crown

  • Small seconds

  • Transparent case back

Technical Data

  • Buckle type: Foldover clasp
  • Strap color: Brown
  • Bracelet: Leather strap
  • Between lugs: 21 mm
  • Case: Steel
  • Case diameter: 44 mm
  • Dial colour: Silver
  • Crystal: Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
  • Water resistance: 15 bar (150 metres / 500 feet)
  • Movement type: Self winding

Movement

  • Calibre: OMEGA 3313
  • Self‑winding chronograph movement with column wheel mechanism and Co‑Axial escapement. Free sprung balance, with date, hour, minute and continuous small seconds hands, central chronograph hand.
  • Power reserve: 52 hours
  • Type: Self winding

Key materials

  • Material - Stainless Steel

    Stainless Steel

  • 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.

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.

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