JLC 866

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The JLC 866 is a watch movement from Jaeger-LeCoultre.

Introduced in 2013, Calibre 866 replaced Jaeger-LeCoultre's Calibre 924, which had been on the market for 8 years. 866 was very similar to 924 but lacks a power reserve indicator.

The 866 is an automatic movement made up of 305 pieces. It runs at 28800 vph, has 32 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 10:00 and 2:00, respectively.

Jaeger-LeCoultre currently uses this calibre in the Jaeger-LeCoultre Master Calendar.




Automatic movement
305 components


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


H 5.65 mm
32 jewels
28,800 A/h
Power reserve 43 Hours

Production period: