Jaeger-LeCoultre - Master Ultra Thin - Q1378421
Master Ultra Thin Réserve de Marche Stainless Steel / Silver / Alligator
Main
Brand
Jaeger-LeCoultre
Family
Master Ultra Thin
Reference
Q1378421
Name
Master Ultra Thin Réserve de Marche Stainless Steel / Silver / Alligator
Movement
Jaeger-LeCoultre caliber 938
Functions
Hours, Minutes, Small Seconds | Date | Power Reserve Indicator
Case
Glass
Sapphire
Back
Open
Shape
Round
Diameter
39mm
Height
8.95mm
Water Resistance
50M
Dial
Color
Silver
Finish
Sunburst
Indexes
Stick / Dot
Hands
Dauphine
Description
The Jaeger-LeCoultre Master Ultra Thin Power Reserve Q1378421 debuted in .
This elegant stainless steel dress watch features a 39 mm case with polished and satin-finished surfaces, framing a silvered sunray dial. Refined elements include elongated hour markers, dauphine hands, and three recessed opaline subdials for the power reserve, date, and small seconds functions—each laid out in a symmetrical and harmonious arrangement.
Inside ticks the automatic caliber 938, developed and manufactured in-house by Jaeger-LeCoultre. With a silicon escapement and a single barrel, it delivers a 70-hour power reserve. The Q1378421 is paired with a light brown leather strap fitted with a stainless steel double folding clasp.
