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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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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GRAIL DRESS WATCH! Jaeger-LeCoultre Master Ultra Thin Moon Phase in 18K Pink Gold Full 2023 Set Ref Q1362580

Jaeger-LeCoultre - Q1362580 / 109.2.A5.S · $18,250

A stunning Jaeger-LeCoultre Master Ultra Thin Moon Phase in 18K pink gold with a gorgeous gradient blue dial, featuring a moon phase sub-dial and a sapphire crystal case back.

Condition: Full set, clean condition, 2.5 years old, under warranty
Case diameter: 39mm
Case thickness: 9mm
Movement: Automatic Cal. 925

Posted at

May 10, 2026, 11:14 PM

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JLC Jaeger-LeCoultre Master Ultra Thin Reserve de Marche

Jaeger-LeCoultre - Q1378420 · $5,500

A Jaeger-LeCoultre Master Ultra Thin Reserve de Marche, purchased in 2016. The watch features a replaced buckle, as documented by JLC, and includes original records.

Condition: Excellent
Box And Papers: Yes

Posted at

May 10, 2026, 12:48 AM

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GRAIL MODERN DRESS WATCH! Jaeger-LeCoultre Master Ultra Thin Moon Phase in 18K Pink Gold Full 2023 Set Ref Q1362580

Jaeger-LeCoultre - Q1362580 / 109.2.A5.S · $18,250

This Jaeger-LeCoultre Master Ultra Thin Moon Phase in 18K pink gold features a gorgeous gradient blue dial and is a modern dress watch perfection with sharp lines and deep gold hallmarks.

Condition: Clean condition, full set with original accessories
Case diameter: 40mm
Movement power reserve: 70 hour

Posted at

May 3, 2026, 10:54 PM

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Jaeger-LeCoultre Master Ultra Thin Moon, ref. Q1368480 Blue

Jaeger-LeCoultre - Q1368480 · $8,250

The Jaeger-LeCoultre Master Ultra Thin Moon in stainless steel features a blue sunray-brushed dial with rhodium-plated hour markers. The watch has a slim profile at 39mm across and 9.3mm thick.

Condition: like-new
Case diameter: 39mm
Thickness: 9.3mm
Water resistance: 5 bar

Posted at

May 3, 2026, 12:10 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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