Omega Style No: 311.63.44.51.06.001 Omega Speedmaster Moonwatch Omega Co-Axial Chronograph Watch - 44.25 mm Black Ceramic Case - Sedna Gold Bezel - Grey Dial - Black Leather Strap

44.25 mm black ceramic case, transparent back, 18K sedna gold bezel, sapphire crystal with anti-reflective treatment on both sides, grey dial, caliber 9300 self-winding movement with chronograph function, approximately 60 hours of power reserve, black leather strap with a brushed ceramic foldover clasp. Water resistant to 50 m (167 ft).