Heuer 12

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This chronograph movement was createdin a secretpartnershipbetweenBreitling,Heuer-Leonidas, Hamilton/Burenand DuboisDéprazin order to developthe firstautomaticchronograph.Caliber11Chronomaticwas presentedin March 1969shortly after theZenith/Movadopresentedthe firstautomatic windchronograph (ELPrimero) in Januarythe same year.The chronographmoduleDuboisDépraz8510hasalso been used byValjoux,Cal:7740.


Data Heuer cal: 12


  • 17 jewels, automatic wind (microrotor), chronograph, 60 s, 30 min, 12 h, 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.