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Omega, Speedmaster '57 Co-Axial chronograph, 41.5mm Watch 331.

SKU: 331.

The OMEGA Speedmaster is one of OMEGA’s most iconic timepieces. Having been a part of all six lunar missions, the legendary Speedmaster is an impressive representation of the brand’s adventurous pioneering spirit.

This model features a PVD blue dial with a seconds sub-dial at 9 o’clock and a 12-hour and 60-minute chronograph recorder on the sub-dial at 3 o’clock. There is a central chronograph seconds hand and a date window at the 6 o’clock position. A scratch-resistant sapphire crystal protects this bold dial. The brushed bezel, with its tachymeter scale, is mounted on a 41.50 mm stainless steel case and presented on a matching bracelet.

At the heart of this timepiece is the OMEGA Co-Axial calibre 9300, the first chronograph in the brand’s family of in-house Co-Axial mechanical movements.


  • Chronograph

  • Chronometer

  • Date

  • Small seconds

  • Tachymeter

  • Transparent case back


    Scratch-resistant sapphire crystal with anti-reflective treatment on both sides



    Water resistance
    10 bar (100 metres / 330 feet)

    Case Diameter: 41.5 mm


    Calibre: Omega 9300

    Self-winding chronograph movement with column wheel mechanism and Co-Axial escapement. Silicon balance-spring on free sprung-balance, 2 barrels mounted in series, automatic winding in both directions. Rhodium plated finish with exclusive Geneva waves in arabesque.

    Power reserve: 60 hours

    Type: Self winding

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