Omega Style No: 310.20.42.50.99.001 Omega Speedmaster Moonwatch Professional - 42 mm Steel And Sedna Gold Case - PVD-Treated 18K Sedna Gold Step Dial - Polished-Brushed Bracelet

42 mm steel and sedna gold case with anti-magnetic protection, black ceramic bezel ring, scratch-resistant sapphire crystal with anti-reflective treatment inside, PVD-treated 18k sedna gold step dial, Omega 3861 manual-winding chronometer movement, approximately 50 hours of power reserve, polished-brushed bracelet with OMEGA’s patented comfort release adjustment system. Water resistant to 50 metres (167 feet).