The Jaeger-LeCoultre Master Control Chronograph Calendar Q4138431 launched in 2025, featuring a 40 mm stainless steel case that is 12.05 mm thick. It combines a triple calendar and chronograph on a silvered sunray-brushed dial with a pulsometer scale, moon phase, and day/month apertures. Driven by the automatic caliber 759 with a 65-hour power reserve, it comes with both light brown calfskin and black alligator straps.
Shape
Round
Lug Distance
20.00 mm
Material
Stainless Steel
Glass
Sapphire
Thickness
12.05 mm
Diameter
40.00 mm
Water Resistance
50.00 m
Dial Color
Silver
