Omega Speedmaster Moonwatch Omega Co-Axial Chronograph Grey Side of the Moon Meteorite Watch - 44.25 mm Grey Ceramic Case - Senda Gold Bezel - Meteorite Dial - Grey Leather Strap - 311.63.44.51.99.002

44.25 mm grey ceramic case, transparent back, 18K Senda gold bezel with a silicon nitride ring and brushed Ceragold tachymeter scale, sapphire crystal with anti-reflective treatment on both sides, meteorite dial made from a solid piece of ancient extra-terrestrial stone that has been acid etched to reveal a unique pattern on each watch, caliber 9300 self-winding movement with chronograph function, approximately 60 hours of power reserve, grey leather strap, ardillon buckle. Water resistant to 50 m (167 ft).