Cal.25B, nickel plated 38 jewel chronometer rated movement, silvered dial with applied gilt block markers, luminous baton hands, subsidiary dials for running seconds, 15 minutes and 6 hour registers, date aperture in second quarter, outer variable slide-rule tachometer, cambered glare proof sapphire crystal, oversize water-resistant type case with screw-down reverse and crown, knurled rotating bezel and faceted central band, on dark brown Breitling strap with 18k gold Breitling buckle, case, dial and movement signed, with bakelite Breitling presentation case, COSC chronometer rating certificate, instruction and stamped (void) guarantee width 50mm.