Calibres 751 and 752 were a real advancement for Jaeger-LeCoultre. They brought a column wheel and vertical clutch chronograph to the modern Autotractor base movement and became the company’s go-to chronograph. These double-barreled movements can run for 65 hours and adopt the current trends of uni-directional winding and a free-sprung balance. The mainspring comes from Richemont brother company A. Lange & Söhne rather than the Swatch conglomerate, making it truly in-house.
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