Master Control Chronograph Calendar

The Jaeger-LeCoultre Master Control Chronograph Calendar, reference Q4138420, pairs a full calendar display — day, date, month, and moonphase — with an integrated chronograph in a restrained 40 mm stainless steel case. The silver dial organises a considerable amount of information with the measured elegance that has long defined the Master Control line. Calibre 759 powers the watch, delivering both the calendar complications and the chronograph function within a single, in-house movement.

The Master Control collection traces its roots to the early 1990s, when Jaeger-LeCoultre repositioned it as the maison's standard-bearer for refined, everyday-wearable complications. Reference Q4138420 was introduced in 2020 as part of a broader refresh of the Master Control family that brought updated case proportions and movement architecture. The model was produced through 2023, occupying a well-regarded position in the line as a calendar chronograph of classical sensibility. Collectors appreciate it as a versatile dress-sport piece that demonstrates the manufacture's depth in in-house movement production.