OMEGA Seamaster
RAILMASTER CO−AXIAL MASTER CHRONOMETER 40 MM

Steel on Steel
Ref. 220.10.40.20.03.001
{{ priceData.formatedPrice }}
{{ priceData.message }}
Serial no. {{ userProductInfos.serialNo }}
Documentation View Interactive User Manual
Warranty {{ userProductInfos.warrantyNo }} {{ validUntil(userProductInfos.warrantyDate) }}
Service Make an appointment

The original OMEGA Railmaster of 1957 was a practical yet elegant anti-magnetic watch designed for railway staff or anyone who worked close to electrical fields. Today, that industrial spirit and innovation has been updated for a modern collection.

In this denim-inspired model, the 40 mm symmetrical case is made from stainless steel with a wave-edged design featured on the back. The vertically brushed “blue jeans” dial includes brushed stainless steel hands and recessed hour-markers which are all filled with light grey Super-LumiNova. There is also a beige central seconds hand and transferred “Railmaster” indication which delivers a classic touch.

The watch has a stainless steel bracelet as well as an oriented caseback featuring a NAIAD LOCK design to keep the wording in position. The watch is driven by the OMEGA Co-Axial Master Chronometer Calibre 8806, making it resistant to magnetic fields of 15,000 gauss.

Case

  • Total product weight (approx.) 151 g
  • Between lugs 20 mm
  • Thickness 12.7 mm
  • Case Material Steel
  • Case Diameter 40 mm
  • Water resistance 15 bar (150 metres / 500 feet)

Features

  • Anti‑magnetic
  • Chronometer
  • Master Chronometer Certified
  • Screw‑in crown

Explore
the assortment

View:

{{ currentWatch.collectionTitle }}
{{ currentWatch.productTitle }}

{{ currentWatch.caseSize }}, {{ currentWatch.mainMaterial }} Plan an appointment

{{ currentStrap.productTitle }}
{{ currentStrapFormattedPrice }}

Plan an appointment

{{ transformStrapName(currentStrap.productTitle)[0] }}
{{ transformStrapName(currentStrap.productTitle)[1] }}

{{ currentStrapFormattedPrice }}

{{ currentStrap.productDescription }}

{{ currentStrap.productId }}

Plan an appointment

Specifications

  • Case Material Steel
  • Water Resistance 15 bar (150 metres / 500 feet)
  • Case Diameter 40 mm
  • Thickness 12.7 mm
  • Between lugs 20 mm
  • Product weight (approx.) 151 g
  • Dial Color Blue
  • Crystal Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides

Bracelet

  • Bracelet Material Steel
  • Type of Clasp Butterfly clasp

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.

  • Calibre OMEGA 8806
    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.
  • Power Reserve 55 Hours
  • Type SELF WINDING
  • Frequency 3.5 Hz

  • 1
  • 2
  • 3
  • 4
  • 5

Explore all boutiques