Classique Quantième perpétuel 7327 is a luxury wristwatch from Breguet.

In the 1780s, Abraham-Louis Breguet enjoyed great success with his so-called perpétuelle watches equipped with an à secousses (moving) oscillating weight enabling the calibre to react to the wearer's body movements and thus automatically wind the mechanism as they walked. These watches often incorporated a calendar mechanism and it was also on these models that Breguet experimented with his first guilloché silvered dials.

In 2023, Breguet pays tribute to it within its Classique collection through a reinterpretation of the perpetual calendar in two different gold colours: white gold and rose gold. The design is based on that of the watches made by Abraham-Louis Breguet in his time. It features the breguet hallmarks such as Clous de Paris-guilloché and Breguet hands in blued steel.

The perpetual calendar mechanism is based on a gearing system from the hour’s wheel and a large central lever that drives the entire movement on a daily basis. Therefore, this movement consists of a total of 294 individual parts.

The watch is powered by caliber 502.3.P, which is one of the thinnest automatic movements with perpetual calendar function to date, with a height of only 4.5 mm.

The golden oscillating weight is mounted off-center on the edge of the rhodium-plated movement to leave as much space as possible for its most important elements. The balance of this automatic movement oscillates at a frequency of 21,600 A/h and has a power reserve of 45 hours when fully wound.