Omega Seamaster Railmaster 40mm steel on NATO strap

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 blue denim and leather NATO strap 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.
Features
Anti-magnetic
The movement is unaffected by exposure to strong magnetic fields, even those greater than 1.5 tesla (15,000 gauss).
Chronometer
Label given to a watch which has undergone precision tests and received a certificate from an official body.
Master Chronometer Certified
Guaranteeing the Swiss industry’s highest standard of precision, performance and magnetic-resistance, as set by the Swiss Federal Institute of Metrology.
Screw-in crown
Self-locking crown, screwed into the tube of the case, used for highly water resistant divers’ watches.
Technical Data
Reference
220.12.40.20.03.001
Between lugs 20mm
Lug-to-lug 47.0mm
Thickness 12.7mm
Case diameter 40mm
Case
Steel
Dial colour Blue
Crystal
Domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides
Water resistance
15 bar (150metres / 500 feet)
Total product weight (approx.)
88 g
Calibre: Replica Omega 8806
Movement Type Self winding
Power reserve 55 hours
Case Measurements
1. Between lugs This measures the space where a strap or bracelet would be placed.
2. Lug-to-lug
This is the full length of the case, from the top lugs to the bottom lugs.
3. Case diameter This is the full width of the watch’s case, excluding the crown and pushers.
4. Thickness When viewed from the side, this measures from the base of the watch to the surface of the glass.
Strap
Strap color Multicolore
Strap type NATO strap
Strap surface Cotton fabric
Strap underside Cowhide
Buckle type Pin buckle
Buckle material Stainless steel