558QP2

Manual-wind movement, caliber 558QP2, featuring a tourbillon and perpetual calendar, signed and numbered by Breguet. Measuring 14 ½ lines with 21 jewels, it offers a 50-hour power reserve, small seconds on the tourbillon axis, and a lateral lever escapement with a balance featuring adjustment screws on a Breguet spring. It operates at 2.5Hz and is adjusted across six positions, including a tourbillon escapement.