Omega Style No: 331.20.42.51.01.002 Omega Speedmaster '57 Co-Axial Chronograph Watch - 41.5 mm Steel And Red Gold Case - Black Dial - Steel Bracelet

41.5 mm stainless steel and red gold case, transparent back, 18K red gold bezel with tachymeter scale, scratch-resistant sapphire crystal with anti-reflective treatment on both sides, black dial with a seconds sub-dial at 9 o’clock and a 12-hour and 60-minute chronograph recorder on the sub-dial at 3 o’clock, calibre 9300 self-winding movement with a central chronograph seconds hand and a date window at 6 o’clock, approximately 60 hours of power reserve, stainless steel bracelet with 18K red gold. Water resistant to 10 bar.