Lemania 5100

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Calibre 5100 is an automatic chronograph movement by Lemania.


Introduced in 1974, Cal. 5100 followed closely after the introduction of Lemania's similar Cal. 1340 family. Like that movement, it features an unusual arrangement of chronograph counters:

  • Center hour and minute hands, chronograph seconds, and 60 minute chronograph totaliser
  • 12-hour totaliser at 6:00
  • Small seconds at 9:00
  • 24 hour hand at 12:00
  • Day and date windows at 3:00

It has 17 jewels, hacking seconds, and power reserve ca. 48 hours. Omega used Cal. 5100 as their Cal. 1045.

Cal. 5100's predecessor, Cal. 1340, was refreshed and re-launched as a successor, Cal. 1350, in 1994.

The Lemania 5100 has in later years been produced as the ETA C01.211.


  • Lemania 5012 - 21,600 A/h version with no 24 hour register

External Links


Self-winding movement, chronograph
KIF Ultraflex shock protection
Escapement: stone lever
Yoke winding system


Hours, Minutes
Small seconds at 9
Date indication with quickset feature
Balance wheel hacking seconds
Complication: 12 hours counter at 6 h
24-hours indication, day/date indication
Chronograph: 12-hours counter, 60-minutes counter


13¾ lignes
D 31 mm, H 8.2 mm
17 jewels
28,800 A/h
Power reserve 48h

Production period: