174

The spherical 'Gyrotourbillon' represents a signature Jaeger-LeCoultre complication. Caliber 174 contains 373 components and offers a 50-hour power reserve. Its tourbillon features an aluminum outer carriage rotating in 60 seconds, a titanium and aluminum inner carriage rotating in 18.75 seconds, and a balance with 12.5 mg x cm2 inertia oscillating at 28,800 vibrations per hour.