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 blue rotating inner bezel with

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

chronograph

unidirectional rotating bezel

18K Sedna gold bezel with blue ceramic ring and tachymeter scale in Ceragold

approximately 70 hrs of power reserve

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 blue rotating inner bezel with44. 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