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

42.4 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).