Omega Speedmaster Moonphase Master Chronometer Chronograph Watch - 44.25 mm Steel Case - Sedna Gold Bezel - Brown Diamond Dial - Brown Leather Strap - 304.23.44.52.13.001 43.0 self-winding chronometer Omega 2500 movement

self-winding chronometer Omega 2500 movement with Co-Axial Escapement and date

white mother-of-pearl supernova dial with diamond hour markers

Water resistant to 50 meters

blue unidirectional rotating bezel

Omega Speedmaster Moonphase Master Chronometer Chronograph Watch - 44.25 mm Steel Case - Sedna Gold Bezel - Brown Diamond Dial - Brown Leather Strap - 304.23.44.52.13.001 43.0 self-winding chronometer Omega 2500 movement44. 25 mm stainless steel case with anti magnetic properties, transparent back, 18K Sedna gold crown and push pieces, 18K Sedna gold bezel with brown ceramic ring and Ceragold tachymeter scale, scratch resistant sapphire crystal with anti reflective treatment on both sides, brown sun brushed dial with diamond polished 18K Sedna gold indexes and hands, caliber 9904 self winding Co Axial master chronometer movement with chronograph and moonphase