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 da-vinci This model features a 42

This model features a 42 mm steel and titanium case with a silver dial and steel bracelet

black rotating inner bezel with diving scale and zone from 60 to 15 minutes in black

black alligator strap with hand-stitched “large square scale”

18K pink gold pin buckle

18K sedna gold bezel with omega ceragold diving scale

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 da-vinci This model features a 4240 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).