53-01

Self-winding mechanical caliber measuring 30.95 mm in diameter and 5.5 mm in height, excluding the tourbillon cage. It features a 21,600 vph screw balance with 18 weighted gold screws, a 48-hour power reserve (+/- 5%), a Breguet hairspring, 35 jewels plus two diamonds, and Incabloc shock protection. The movement is intricately finished with hand-skeletonized and engraved frame parts, an engraved barrel, gold chatons, blued screws, double sunburst winding wheels, and polished, beveled components.