Jaeger-LeCoultre Master

Designed, produced and assembled entirely in-house, the calibre 759 powers the brand's first chronograph and complete calendar watch — the Master Control Chronograph Calendar, released in 2020. It is based on Jaeger-LeCoultre's integrated column-wheel chronograph calibre 751, thus featuring a high-performance vertical clutch composition. Additionally, it is composed of a total of 358 parts, including a silicon escapement, 37 jewels, and an openworked rotor. The complete calendar complication bolstered by calibre 759 comprises day, date, month, and moon phase indicators. It runs at a frequency of 28,800bph and stores up to 65 hours of power reserve in two barrels.