Omega Style No: 329.32.44.51.01.001 Omega Speedmaster Racing Co-Axial Master Chronograph Watch - 44.25 mm Steel Case - Black Ceramic Bezel - Matt Black Dial - Black Micro-Perforated Leather Strap

44.25 mm stainless steel case with antimagnetic design, transparent back, black ceramic bezel with tachymeter scale in orange wording and liquidmetal scale, domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides, matt black 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, black micro-perforated leather strap with orange rubber interior. Water resistant to 50 m (167 ft).