Omega Style No: 435.13.40.21.06.001 Omega De Ville Trésor Co-Axial Master Chronometer Small Seconds - 40 mm Steel Case - Grey Dial

40 mm steel case, transparent back, scratch-resistant sapphire crystal with anti-reflective treatment on both sides, domed grey dial with a Small Seconds display at 6H, Calibre 8926 manual-winding chronometer movement with small seconds. Water resistant to 30 metres (100 feet).