Manual winding mechanical movement Calibre 861, 21600 vibrations per hour, 17 jewels, incabloc, and providing about 50 hours of power reserve
Chronograph with three sub-dials. Tachymetric scale on the black steel bezel
Steel case, 42 mm size. Black dial with three crated counters. Luminous hands and hour markers. Personalized crown. Hesalite crystal
Steel screw-down case back engraved 'Flight-qualified by NASA for all manned space missions - The first watch worn on the moon '
Omega steel bracelet flat three-piece links with original folding clasp.