Breguet 586/1

The caliber 586/1 is an automatic movement manufactured by Breguet, fitted with a silicon hairspring. It has 38 jewels, operates at a frequency of 21600 vibrations per hour, and offers a power reserve of 36 hours, with a moon phase complication. This caliber powers the Reine de Naples 8925, Reine de Naples 8928, Reine de Naples 9807 and Reine de Naples 9808 models.