42 mm steel case, anodised aluminium bezel ring, hesalite crystal with omega logo in the centre, black step dial, Calibre 3861 manual-winding chronometer movement with chronograph and small seconds. Water resistant to 50 metres (167 feet).
Omega Speedmaster Stainless Steel 42 MM - Black Fabric Strap - Black Dial - 310.32.42.50.01.001
