Breguet 502.3 QSE1

Breguet caliber 502.3 QSE1 is a manual-winding in-house movement introduced in 2015. It features a tourbillon alongside perpetual calendar and equation of time complications. The movement is 3mm thick with a 60-hour power reserve. This variant is used in the Classique Tourbillon Extra-Plat and remains in production.