The new version of Omega Ocean Universe 600m Co-Axial Master Chronometer Chronograph Black Face, produced by OM factory, is the first exclusive re-engraving of the 9900 movement with two-hand independent chronograph function on the right small circle. The chronograph function is the same as the original one, 45.5x17mm, re-engraved 9900 Automatic mechanical chronograph movement, 316 stainless steel case, sapphire mirror, ceramic bezel, luminous dial hands, nylon tape or steel band, folding clasp, water resistance greater than 50 meters