Jaeger-LeCoultre Master Ultra Thin Master Ultra Thin Réserve de Marche Stainless Steel / Silver / Alligator

Reference 1378420

Jaeger-LeCoultre Master Ultra Thin Réserve de Marche Stainless Steel / Silver / Alligator

About this watch

The Jaeger-LeCoultre Master Ultra Thin Réserve de Marche is a masterpiece of horological art, showcasing precision and elegance in its round 39mm case with a height of just 9.9mm. The stainless steel case exudes a sophisticated shine, while the sunburst finish on the silver dial adds depth and character. A gem-set bezel adds a touch of extravagance without overpowering the simplicity of the design. The Jaeger-LeCoultre caliber 938 mechanical automatic winding movement is a marvel of engineering, boasting 273 parts and 41 jewels, with a frequency of 28,800 vibrations per hour. This watch provides a wealth of information with indications for hours, minutes, small seconds, date, and power reserve indicator. Its slim profile and lightweight feel make it comfortable for all-day use. With a water resistance of up to 50 meters, you can wear it confidently while washing your hands or caught in the rain.

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Key Features

39mm round stainless steel case
9.9mm height for ultimate wearability
Jaeger-LeCoultre caliber 938 mechanical automatic winding movement
Sapphire glass for scratch resistance
43-hour power reserve indicator
Water resistance up to 50 meters
Gem-set bezel for a touch of luxury

Specifications

Brand

Jaeger-LeCoultre

Family

Master Ultra Thin

Model

Master Ultra Thin Réserve de Marche Stainless Steel / Silver / Alligator

Reference

1378420

Movement

938

Movement Features

Hours, Minutes, Small Seconds
Date
Power Reserve Indicator

Case

Stainless Steel 39mm

Dial Color

Silver

Crystal

Sapphire

Water Resistance

Current Listings

Jager LeCoultre Q1378420 Master Reserve de Marche

Jager LeCoultre - Q1378420 · $4,999

Jager LeCoultre Master Reserve de Marche, a stainless steel watch with automatic movement and power reserve indicator.

Condition: Excellent
Case Size: 39mm diameter
Thickness: 10mm
Water Resistance: 100ft

Posted at

Jan 29, 2025, 1:29 PM

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Jaeger-LeCoultre Q114842J Master Ultra Thin Perpetual: Full Set - Factory Warranty

Jaeger-LeCoultre - Q114842J · $22,500

This Jaeger-LeCoultre Master Ultra Thin Perpetual Calendar features a polished stainless steel case, frosted silver dial with perpetual calendar sub-dials and unique 'date change danger zone' indicator. The watch is powered by the in-house Caliber 868 movement.

Condition: Excellent, rated 9/10
Case material: Polished stainless steel
Diameter: 39mm
Movement: JLC Caliber 868, in-house assembly

Posted at

May 25, 2026, 12:00 PM

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2025 Jaeger-LeCoultre Master Ultra Thin Moon Ref: Q1368471

Jaeger-LeCoultre - Q1368471 · $7,250

A Jaeger-LeCoultre Master Ultra Thin Moon with a 39mm case and Caliber 925 movement featuring a 70 hour power reserve.

Condition: Excellent, slight wear on the strap
Case Size: 39mm
Movement Power Reserve: 70 hours

Posted at

May 24, 2026, 6:20 PM

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Jaeger-LeCoultre Master Ultra Thin Moon 39 Ref. Q1368470 | Box & Papers | Extra Strap

Jaeger-LeCoultre - Q1368470 · $6,700

The elegant Jaeger-LeCoultre Master Ultra Thin Moon 39 is a refined modern dress watch with ideal proportions, a clean layout, and exceptional elegance. It features an in-house automatic Caliber 925/1 and a moonphase with date at 6 o'clock.

Condition: Mint condition
Case size: 39mm
Thickness: 9.9mm
Power reserve: 70-hour

Posted at

May 17, 2026, 2:17 PM

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Jaeger-LeCoultre Master Ultra Thin Moon Ref:Q1368471 Full Set

Jaeger-LeCoultre - Q1368471 · $7,500

A 39mm Jaeger-LeCoultre Ultra Thin Moon with an updated Caliber 925 movement and 70 hour power reserve is up for sale. The watch comes complete with its box, papers, travel pouch, and warranty card.

Condition: Excellent condition, slight wear on the strap
Case size: 39mm
Movement: Caliber 925
Power reserve: 70 hours

Posted at

May 15, 2026, 2:13 PM

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2024 Jaeger LeCoultre Master Ultra Thin Moon. Q1368480. Gorgeous Blue Dial. Warranty through 2032. $7,600.

Jaeger LeCoultre - Q1368480 · $7,600

A beautiful Jaeger LeCoultre Master Ultra Thin Moon with a deep blue sunray dial, dated March 2024, and an extended warranty running through 2032.

Condition: Excellent condition with some wear on the strap
Warranty expiration year: 2032

Posted at

May 13, 2026, 4:47 PM

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Jaeger LeCoultre Master Ultra Thin Moon 39mm 1368430 ( unworn / 2026 / box and papers )

Jaeger LeCoultre - Q1368430 · $9,995

This is an unworn Jaeger LeCoultre Master Ultra Thin Moon, a 39mm stainless steel automatic watch with the JLC Calibre 925 movement.

Condition: Unworn
Case diameter: 39mm
Case material: Stainless Steel
Movement: JLC Calibre 925

Posted at

May 13, 2026, 12:07 PM

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BNIB Jaeger-LeCoultre MASTER ULTRA THIN MOON STAINLESS STEEL 2025 FULL SET

Jaeger-LeCoultre - Q1368430 · $9,325

A Jaeger-LeCoultre Master Ultra Thin Moonphase watch in stainless steel with a silver dial, featuring a 39mm case and a black alligator leather strap. The watch is complete with its original packaging and comes under an 8-year factory warranty.

Condition: Brand New In Box (BNIB)
Case size: 39mm
Material: stainless steel
Strap material: black alligator leather

Posted at

Apr 1, 2025, 8:54 PM

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