cal. 3201 manual winding movement Co-Axial escapement 29 jewels free sprung balance • black dial baton indexes luminescent dots and hands subsidiary dials for constant seconds 30-minutes and 12-hour registers • bezel with black aluminium ring calibrated for tachometer scale polished and satin-finished case with screw-down sapphire crystal display back • case dial and movement signed • with an 18k pink gold Omega folding buckle