Omega Speedmaster Mark II Co-Axial Chronograph Watch - 42.4 mm Steel - Sedna Gold Case - Grey Dial - Steel And Sedna Gold Bracelet - 327.20.43.50.01.001 Demoiselle calibre self-winding movement

calibre self-winding movement

crown set with a blue cabochon sapphire

24-hour display with day and night sectors

Water resistant to 600 metres (2000 feet)

Omega Speedmaster Mark II Co-Axial Chronograph Watch - 42.4 mm Steel - Sedna Gold Case - Grey Dial - Steel And Sedna Gold Bracelet - 327.20.43.50.01.001 Demoiselle calibre self-winding movement42. 4 mm x 46. 2 mm steel sedna gold case, 18K sedna gold bezel, sapphire crystal with anti reflective treatment on both sides, grey dial, caliber 3330 self winding movement with chronograph function, approximately 52 hours of power reserve, steel and 18K sedna gold bracelet. Water resistant to 100 m (330 ft).