Jaeger-LeCoultre
Master Ultra Thin Date
Q1238420
Refined restraint: 39 mm of Jaeger-LeCoultre dress-watch mastery.
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Overview
The Jaeger-LeCoultre Master Ultra Thin Date reference Q1238420 distils the long-running Master Ultra Thin line to its essentials: a 39 mm stainless steel case measuring just 7.8 mm at its thinnest, a silvered grey dial dressed with elegant dauphine hands, and a discreet date complication. It represents the Le Sentier manufacture's enduring commitment to producing dress watches of classical proportion and mechanical integrity.
History
The Master Ultra Thin collection traces its roots to Jaeger-LeCoultre's deep tradition of ultra-thin movement engineering, a discipline the manufacture has pursued for well over a century. The modern Master Ultra Thin Date family brought that heritage into a contemporary stainless steel context, broadening the line's appeal beyond precious-metal configurations. Reference Q1238420 entered production in 2018 and continues to serve as a cornerstone of the collection, pairing the in-house Calibre 899AC with a case profile that sits unobtrusively beneath a shirt cuff.
Notable points
- The 7.8 mm case thickness is a defining achievement, placing Q1238420 among the slimmest date-equipped dress watches in Jaeger-LeCoultre's current catalogue.
- Calibre 899AC is an in-house automatic movement developed specifically for the Master Ultra Thin line, reflecting the manufacture's vertically integrated approach to movement design and production.
- The 39 mm case diameter adheres to a classical dress-watch convention, offering a balanced fit on a wide range of wrist sizes without sacrificing legibility.
- The silvered grey dial with dauphine hands is a study in restraint — surface texture and hand form provide visual interest without resorting to decorative excess.
- Stainless steel construction makes Q1238420 the most accessible entry point into the Master Ultra Thin Date family, while retaining the same movement and proportions as its precious-metal counterparts.
Specifications
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