Omega Speedmaster Moonwatch Co-Axial Chronograph Watch - 44.25 mm Steel Case - Blue Tachymeter Bezel - Blue Dial - Blue Leather Strap - 311.93.44.51.03.001 39.5 caliber 8521 self-winding movement with

caliber 8521 self-winding movement with date window at 3 o'clock

comes with additional blue rubber strap

scratch-resistant sapphire crystal anti-reflective treatment on both sides

black dial with diamond hour markers

Omega Speedmaster Moonwatch Co-Axial Chronograph Watch - 44.25 mm Steel Case - Blue Tachymeter Bezel - Blue Dial - Blue Leather Strap - 311.93.44.51.03.001 39.5 caliber 8521 self-winding movement with44. 25 mm stainless steel case, transparent back, blue tachymeter bezel, scratch resistant sapphire crystal with anti reflective treatment on both sides, blue dial, self winding chronometer Omega 9300 movement with Co Axial Escapement, chronograph, date, and small seconds, approximately 60 hours of power reserve, blue leather strap. Water resistant to 100 m.