Description Omega – a gentleman's 18 carat yellow gold Automatic Constellation Chronometer wrist watch. Omega – a gentleman's 18 carat yellow gold Automatic Constellation Chronometer wrist watch, circular champagne 30mm dial with raised baton markers, centre seconds hand and date aperture in an 18 carat yellow gold 34mm screw back case with Omega Constellation monogram with integral finely textured flexible bracelet graduating from 20mm to 16mm, length 18.5cm, gross weight including movement approximately 100.4gms, no box or paperwork, watch is running at present time although no guarantee is given.