Breguet 537

Breguet caliber 537 is a manual-winding movement introduced in 2000 as part of the in-house 500 caliber family. It remains in production. The movement features an open-worked architecture that exposes the mechanism from the dial side, a signature design element of the Tradition collection for which it was developed. Variants are known as 537/1, 537/2, and 537/3.