This mint steel Zenith El Primero 36’000 VpH, ref 03.2043.400, was made in a limited edition of 500 pieces. It is powered by the infamous Zenith El Primero Caliber 400 B, beats at 36,600 vph, 31 Jewels, 326 components & an approximate power reserve of 50 hours. With box and papers dated in March 2013 from Cortina Watch.