Omega Seamaster Railmaster Omega Co-Axial Master Chronometer Watch - 40 mm Steel Case - Vertically Brushed Grey Dial - Brown Leather Nato Strap - 220.12.40.20.06.001 Case 18K yellow gold bezel set

18K yellow gold bezel set with 36 diamonds and 12 black sapphires

white mother-of-pearl dial with diamond hour markers and scratch-resistant saphire crystal

fixed 18K yellow gold bezel with engraved tachymetric scale

5 mm steel and red gold case

caliber 2500 self-winding movement set with rhodium-plated finish

Omega Seamaster Railmaster Omega Co-Axial Master Chronometer Watch - 40 mm Steel Case - Vertically Brushed Grey Dial - Brown Leather Nato Strap - 220.12.40.20.06.001 Case 18K yellow gold bezel set40 mm stainless steel case, screw in crown, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, vertically brushed grey dial with brushded stainless steel hands and recess hour markers filled with vintage color Super LumiNova, caliber 8806 self winding Co Axial master chronometer movement, approximately 55 hours of power reserve, brown leather NATO strap. Water resistant to 150 m (500 ft).