OMEGA Seamaster Railmaster

Omega Seamaster Railmaster 235.10.38.20.13.001 has a 38 mm steel case. The Railmaster's case is 12.36 mm thick and measures 44.92 mm lug to lug. A domed sapphire crystal with anti-reflective treatment on both sides covers the brown dial. Omega rates the case to 150 metres. The self-winding calibre 8804 has a Co-Axial escapement, a silicon balance spring and a 55 hour power reserve. The movement is certified as a Master Chronometer and resists magnetic fields up to 15,000 gauss. The dial has a small seconds display at 6 o'clock, and a display back shows the movement. The steel bracelet has a butterfly clasp with comfort setting.