Railmaster Omega Co‑Axial Master Chronometer 40 mm

Steel on coated nylon fabric strap

220.12.40.20.01.001

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Description

The original OMEGA Railmaster of 1957 was a simple, practical, yet elegant watch designed for railway staff or anyone who worked close to electrical fields. Today, that spirit of innovation has been carried over into an updated model which enhances the Railmaster’s capabilities yet again.

The 40mm symmetrical case is made from stainless steel with a wave-edged design featured on the back. The vertically brushed black dial includes brushed stainless steel hands and recessed hour-markers which are all filled with “vintage” Super-LumiNova. There is also a transferred beige “Railmaster” indication which delivers a classic touch.

The watch has a two-tone grey textile strap and the oriented caseback features a NAIAD LOCK design (patent pending) to keep the wording upright.  The watch is driven by the OMEGA Co-Axial Master Chronometer Calibre 8806. Certified at the industry’s highest standard by the Swiss Federal Institute of Metrology (METAS) and able to withstand magnetism of 15,000 gauss, this Railmaster model recalls the superb anti-magnetic qualities of its predecessor.

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5-Year Warranty

All OMEGA watches are delivered with a 5-year warranty that covers the repair of any material or manufacturing defects. Please refer to the operating instructions for specific information about the warranty conditions and restrictions.

Features

  • Anti‑magnetic

    Anti-magnetic Anti-magnetic

    The movement is unaffected by exposure to strong magnetic fields, even those greater than 1.5 tesla (15,000 gauss).

  • Chronometer

    Chronometer Chronometer

    Label given to a watch which has undergone precision tests and received a certificate from an official body (COSC).

  • Screw‑in crown

    Screw-in crown Screw-in crown

    Self-locking crown, screwed into the tube of the case, used for highly water resistant divers' watches.

Technical Data

  • Between lugs: 20 mm
  • Bracelet: coated nylon fabric strap
  • Case: Steel
  • Case diameter: 40 mm
  • Dial colour: Black
  • Crystal: Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
  • Water resistance: 15 bar (150 metres / 500 feet)

The advantages of this Master Chronometer watch

Behind the elegance of every Master Chronometer timepiece is the highest level of testing: 8 tests over 10 days, to ensure superior precision and anti‑magnetic resistance. We’ve raised our standards. You can too.

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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.

031CWZ010933
220.12.40.20.01.001
Choose a strap
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Movement CALIBER OMEGA 8806

Power reserve 55 hours

Type Self winding

Self-winding movement with a Co-Axial escapement. Certified Master Chronometer, approved by METAS, resistant to magnetic fields reaching 15,000 gauss. Free sprung-balance with silicon balance spring, automatic winding in both directions. Special luxury finish with rhodium-plated rotor and bridges with Geneva waves in arabesque.

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