Jaeger-LeCoultre
Master Control Calendar
Q4148420
Triple calendar and moonphase in a refined 40 mm steel package.
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Overview
The Jaeger-LeCoultre Master Control Calendar (Ref. Q4148420) pairs a silver dial with a complete triple-calendar display and moonphase complication, all housed in a 40 mm stainless steel case. Powered by Calibre 866AA, it represents the brand's long-standing commitment to legible, classically proportioned dress watches. The reference sits within the storied Master Control collection, which has anchored Jaeger-LeCoultre's mid-range haute horlogerie offering for decades.
History
The Master Control line traces its roots to the early 1990s, when Jaeger-LeCoultre repositioned it as a benchmark for in-house movement quality and finishing. Calendar and moonphase variants have appeared across successive generations, each refining case geometry and dial architecture. The Q4148420 was introduced in 2020, adopting the collection's contemporary 40 mm standard while retaining the restrained aesthetic that defines the line. It continues in production, making it one of the current references for collectors seeking a triple-calendar complication from the Vallée de Joux manufacture.
Notable points
- Calibre 866AA is an in-house Jaeger-LeCoultre movement incorporating triple-calendar and moonphase functions.
- The 40 mm stainless steel case reflects the Master Control collection's shift toward a more versatile, modern diameter.
- A silver dial provides high legibility for the day, date, month, and moonphase sub-displays.
- The triple calendar displays day, date, and month simultaneously but requires manual correction at the end of short months.
- Introduced in 2020, the reference remains in active production as part of the current Master Control lineup.
Specifications
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