Jaeger-LeCoultre - Master Control - Q4148421

Master Control Calendar Stainless Steel / Silver

Main

Brand

Jaeger-LeCoultre

Family

Master Control

Reference

Q4148421

Name

Master Control Calendar Stainless Steel / Silver

Movement

Jaeger-LeCoultre caliber 866AA

Functions

Hours, Minutes, Small Seconds | Date, Day, Month | Moonphase

Produced

2025

Case

Glass

Sapphire

Back

Open

Shape

Round

Diameter

40mm

Height

10.95mm

Water Resistance

50M

Dial

Color

Silver

Finish

Sunburst

Indexes

Mixed

Hands

Dauphine

Description

The Jaeger-LeCoultre Master Control Calendar Q4148421 debuted in 2025. It features a stainless steel case measuring 40mm in diameter and 10.95mm in height, paired with a silvered grey sunray dial and dauphine-style hands. The calendar layout includes day and month apertures below 12 o’clock, a central date hand with a jumping mechanism that skips the 16th to avoid obscuring the moon phase aperture at 6 o’clock. This watch is powered by the automatic 866AA, which offers hours, minutes, moon phase, full calendar, and central date with jumping hand. It has a power reserve of 70 hours and beats at a frequency of 28,800 vph. The movement is visible through a sapphire crystal case back. The watch is delivered with a light brown calfskin strap and an additional black alligator leather strap, both equipped with a stainless steel folding clasp.

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