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THE CHRONOMÈTRE SOUVERAIN IS A PRECISION CHRONOMETER THAT WAS INSPIRED BY THE MARINE CHRONOMETERS OF THE EARLY 19TH CENTURY. CONSTRUCTED IN THE PUREST CHRONOMETRIC TRADITION, IT HAS AN EXTRAFLAT MOVEMENT THAT IS 4 MM THICK; ITS BASE PLATE AND BRIDGES ARE IN 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.