43-01

Hand-wound mechanical movement measuring 26.2x20.5 mm with a height of 4.3 mm (excluding the tourbillon cage). It features a screw balance with 18 weighted gold screws, a 21,600 A/h frequency, a 48-hour (+/- 5%) power reserve, a Breguet hairspring, and 16 jewel bearings plus 2 diamonds. The movement is beautifully finished with a cutaway frame, hand engraving, anglage, polished steel components, screwed gold chatons, blued screws, and crown wheels featuring a double solar finish, displaying decentralized hours, minutes, and small seconds on the cantilevered dial-side tourbillon.