JLC 879

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Calibre 879 is a watch movement from Jaeger-LeCoultre in the "Eight Days" family.

Like all of Jaeger-LeCoultre's "8 Days" movements, Calibre 879 uses dual barrels to power the movement for eight days. Unlike the Jaeger-LeCoultre Duomètre, however, these barrels are integrated into a single power source rather than being split among various complications. It is a hand-winding movement made up of 224 components. Calibre 874 runs at 28,800 vph and has 25 jewels.

Calibre 879 is a development of Calibre 877, launched in 2003. It is closely related to Calibre 873, Calibre 874, Calibre 875, and Calibre 878.


Calibre 879 was used in the limited-edition Jaeger-LeCoultre Reverso Septantieme of 2004.

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Hand-winding movement
224 components


Hour, minute hands
Moon phase at 1:30
Small seconds at 4:30
Date window at 7:00
Power reserve indicator at 10:30


25 jewels
28,800 A/h
Power reserve: 8 days

Production period: