DialSpec

Jaeger-LeCoultre Master Ultra Thin Power Reserve

Ref. Q1378421current

What is the Jaeger-LeCoultre Master Ultra Thin Power Reserve?

Jaeger-LeCoultre Master Ultra Thin Power Reserve Q1378421 self-winding mechanical watch features a 39mm stainless steel case surrounding a silvered-grey dial on a black alligator strap. This watch is powered by the Jaeger-LeCoultre 938 Caliber. Functions include hours and minutes, seconds, date, and power-reserve indicator. This watch is water resistant up to 50m.

VerifiedUpdated 2026-03-18

Case Details

Diameter Mm
39 mmmedium
Thickness Mm
Unknownlow
Lug To Lug Mm
Unknownlow
Material
Stainless Steelmedium
Shape
Roundmedium
Bezel
Unknownlow
Crystal
Sapphiremedium
Caseback
Exhibitionmedium
Water Resistance M
50 mmedium

Movement

Caliber
Jaeger-LeCoultre 938medium
Manufacturer
Jaeger-LeCoultrelow
Winding
Automaticmedium
Frequency Vph
Unknownlow
Power Reserve Hours
Unknownlow
Complications
Date, Hours And Minutes, Power Reserve Indicatormedium
Base Caliber Notes
Unknownlow

Dial

Color
Silvermedium
Marker Style
Indexmedium

Strap & Bracelet

Type
Braceletmedium
Material
Alligatormedium
Clasp
Folding Bucklemedium

Key Specifications

Diameter39 mm mm
ThicknessUnknown mm
Water Resistance50 m m
MovementJaeger-LeCoultre 938
Power ReserveUnknown hrs
MSRP$10,800
MSRP
$10,800

fixed

Buy for $10,800

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