Heuer 15

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This chronograph movement was created in a secret partnership between Breitling, Heuer-Leonidas, Hamilton/Buren and Dubois Dépraz in order to develop the first automatic chronograph. Caliber 11 Chronomatic was presented in March 1969 shortly after the Zenith/Movado presented the first automatic wind chronograph (ELPrimero) in January the same year. The chronograph module Dubois Dépraz 8510 has also been used by Valjoux, Cal: 7740.


Data Heuer cal: 15

  • 17 jewels, automatic wind (microrotor), chronograph, 60 s, 30 min (Skipper = 15 min), date.
  • Size: 13,75''' 31,00 mm.
  • H: = 7,70 mm.
  • N: = 21600.
  • Power reserve: 42 h.


Versions: Heuer

  • 11: N: = 19800.
  • 12: N: = 21600.
  • 14: as cal: 12 with 24h GMT.
  • 15: as cal: 12, sub second instead of 12 h counter.