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Caliber HEUER 7711

Stopwatch HEUER-LEONIDAS ref. 513.202 (damier dial) --- caliber 7711 ---

HEUER 7711 caliber belongs to the 77XX family, probably developped in the 50’s. It has the split-second function and is in the most of “rattrapante” and “center minute” stopwatches since it was manufactured.
The video below shows the “rattrapante” wheel in action on a ref. 513.202 stopwatch. When the “rattrapante” wheels is locked the “rattrapante” second hand stops following the second hand.

technical general informations on the 7711 :

  • 7 jewels
  • antimagnetic
  • unbreakable mainspring
  • shock protected

advanced technical specifications (also see :

  • frequence : 18000 A/h
  • power reserve : 20h
  • dimension : 19 lignes