Breguet, model 3577PT, is a tourbillon chronograph launched by Breguet in the early 21st century, integrating the brand's two signature complications. The 950 platinum version is particularly rare. The Cal.554.2 movement, led by Daniel Roth in its design, features an open tourbillon window at the center of the dial and a dual-dial chronograph layout, which is a classic expression of Breguet's "balance between function and aesthetics". The platinum 950 case and clasp have a diameter of 38.3mm and are very comfortable to wear.