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OMEGA constellation deville seamaster speedmaster specialities
Speedmaster '57 41.5 mm, steel on leather strap - 331.12.42.51.03.001 - Image 1

Speedmaster '57 41.5 mm, steel on leather strap

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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 brown leather strap.

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.

Reference
331.12.42.51.03.001
Between lugs
20 mm
Lug‑to‑lug
50.0 mm
Thickness
16.2 mm
Case diameter
41.5 mm
Case
Steel
Dial colour
Blue
Crystal
Scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
Water resistance
10 bar (100 metres / 330 feet)
Watch size
Gents
Total product weight (approx.)
110 g
Calibre
Omega 9300
Movement Type
Self winding
Power reserve
60 hours
Strap color
Brown
Strap type
Leather strap
Strap surface
Non‑grained calf leather
Strap underside
Non‑grained calf leather
Buckle type
Foldover clasp
Buckle material
Stainless steel

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.

A new look for your watch

Your watch and strap should go together perfectly, but that doesn't mean you can't experiment with different combinations. Why not mix things up and see what happens? You may discover a look that's as individual as you are.

The advantages
of this watch

At the heart of this timepiece is the Co-Axial escapement, a revolution in watchmaking when first introduced. The reduced stress on the moving parts means less need for lubrication, longer-lasting accuracy and a more stable power reserve rate. In short, this timepiece performs better for longer.

Movement Calibre OMEGA 9300

Calibre 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.

  • Self winding
  • 60 hours Power reserve
  • Frequency 4 Hz
Calibre 9300