Stop watch in 18-carat gold full-hunter case, which is numbered 7570295. The three-quarter plate movement is signed and numbered 5751443, with a Swiss lever escapement and compensation balance. The watch has a white enamel dial with black Roman numerals, chronograph scales around the outside, a subsidiary seconds dial, and Breguet-style hands. There is also a black central chronograph hand with a start/stop/flyback button at six o'clock. The dial is marked "OMEGA / ANTI-MAGNETIQUE / CADRAN BREVETE / S.G.D.G."