Omega Seamaster Railmaster Omega Co-Axial Master Chronometer Watch - 40 mm Steel Case - Vertically Brushed Grey Dial - 220.10.40.20.06.001 Anniversary return-to-zero push button

return-to-zero push button

caliber 8520 self-winding movement with chronometer and a date window at 3 o'clock

second time zone

white ceramic pushpieces and screw-locked crown

27 mm 18K white gold case entirely paved with Snow-set round diamonds

Omega Seamaster Railmaster Omega Co-Axial Master Chronometer Watch - 40 mm Steel Case - Vertically Brushed Grey Dial - 220.10.40.20.06.001 Anniversary return-to-zero push button40 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, stainless steel bracelet. Water resistant to 150 m (500 ft).