Breguet Type XXI, model series: 3817ST/X2/3ZU, men's wristwatch with stainless steel case. Features include automatic mechanical movement (with flyback chronograph function), date display via calendar tri-ape function, central hour and minute indicators, hours and minutes at the periphery of the dial marked by sapphires for 12, 3, 6, 9 o'clock positions with anti-reflective coating. The grey sunray dial has applied indexes and is made from high-grade stainless steel. Equipped with a unidirectional rotatable date chronograph bezel (with laser-engraved markings), exhibition of the power reserve, and hours wheel with luminous coating for better legibility in low light conditions.