Breguet 533.3

Breguet caliber 533.3 is an in-house manual-winding tourbillon movement with an integrated perpetual calendar, launched in 2010 as part of the Caliber 500 family. The movement powers the Classique Tourbillon Quantième Perpétuel 3797, combining Breguet's signature tourbillon with a complete calendar complication that automatically accounts for months of varying lengths and leap years. The caliber remains in production.