JLC 924

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The JLC 924 is a watch full calendar automatic movement from Jaeger-LeCoultre.

Calibre 924 was a 2005 replacement for Calibre 891, which was slightly smaller and lacked the moon phase and power reserve indicators. In 2013, Calibre 866 replaced Calibre 924 after 8 years on the market. 866 was very similar to 924 but lacks a power reserve indicator.

The 924 is an automatic movement running at 28,800 vph. It has 41 jewels and a power reserve of 43 hours. It is a traditional-looking movement with central sweep hands for hour, minute, and date pointer, and a subdial for seconds and moon phase. It also has windows for day and month at 9:00 and 3:00, respectively, and a power reserve indicator at 12:00.

Jaeger-LeCoultre used this calibre in the Jaeger-LeCoultre Master Calendar.




Automatic movement
339 components


Central hour, minute, date hands
Subdial with seconds and moon phase
Day and month windows
Power reserve indicator


Diameter 26 mm
Height 6.5 mm
41 jewels
28,800 A/h
Power reserve 43 Hours

Production period: