Omega Speedmaster Racing Co-Axial Master Chronograph Watch - 44.25 mm Steel Case - Black Ceramic Bezel - White Dial - 329.30.44.51.04.001 Blue beaded crown set with a

beaded crown set with a synthetic spinel cabochon

blue rotating inner bezel with diving scale and zone from 60 to 15 minutes in yellow

grey ruthenium-toned dial with Mega Tapisserie pattern

caliber 1904-PS MC self-winding movement with calendar aperture at 3 o'clock and small seconds counter at 6 o'clock

caliber 5619 quartz movement with chronograph

Omega Speedmaster Racing Co-Axial Master Chronograph Watch - 44.25 mm Steel Case - Black Ceramic Bezel - White Dial - 329.30.44.51.04.001 Blue beaded crown set with a44. 25 mm stainless steel case with antimagnetic design, transparent back, black ceramic bezel with tachymeter scale in white enamel, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, white dial with racing style minute track, caliber 9900 self winding Co Axial master chronometer movement with chronograph and date functions, approximately 60 hours of power reserve, stainless steel bracelet. Water resistant to 50 m