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.