Vacheron Constantin 2162 R31

The caliber 2162 R31 is an automatic movement manufactured by Vacheron Constantin, with a diameter of 32.79 mm and a height of 6.55 mm. It has 30 jewels, operates at a frequency of 18000 vibrations per hour, and offers a power reserve of 72 hours. The movement includes a perpetual calendar with date, day, and month indications, along with a tourbillon, and is used in the Traditionnelle tourbillon retrograde date openface 41mm.