Omega Speedmaster Moonwatch Omega Co-Axial Chronograph Watch - 44.25 mm Black Ceramic Case - Sedna Gold Bezel - Grey Dial - Black Leather Strap - 311.63.44.51.06.001 Dial bezel which includes a tachymeter

bezel which includes a tachymeter scale on a black aluminium ring

providing a striking contrast against the luster of the rose gold case and bracelet

4 mm 18K white gold case

yellow micro-perforated leather strap

mother of pearl diamond Roman VI dial

Omega Speedmaster Moonwatch Omega Co-Axial Chronograph Watch - 44.25 mm Black Ceramic Case - Sedna Gold Bezel - Grey Dial - Black Leather Strap - 311.63.44.51.06.001 Dial bezel which includes a tachymeter44. 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).