The Chronomètre Souverain is a precision chronometer that draws inspiration from the marine chronometers of the early 19th century. Constructed in the purest chronometric tradition, it features an extra-flat movement that is 4 mm thick; its base plate and bridges are crafted from 18K rose gold. The two barrels of the homogeneous movement deliver a highly linear force to the escapement for over fifty-six hours. The escapement beats at a frequency of 21,600 vibrations per hour.