2023 Jaeger-LeCoultre Master Control Geographic Complete Set

Jaeger-LeCoultre Master Control Geographic Q4128420

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Model Background

The Jaeger-LeCoultre Master Control Geographic is one of the most intelligently designed travel watches in production — and it comes from the manufacture that arguably has more movement-building expertise under one roof than any other house in Switzerland. JLC has been making Geographic calibers since the 1990s, and the current iteration powered by the Caliber 939AA represents the most refined expression of that lineage. The system is elegant in its simplicity: a crown-operated 24-city disc along the lower edge of the dial lets you select your second time zone, and the watch simultaneously displays home time, local time with a 24-hour indicator, a day/night display, pointer date, and power reserve — all on a clean, legible dial that doesn't feel cluttered despite the complication count. That's a design achievement in itself. The 939AA is built entirely in-house with 295 components, a 70-hour power reserve, and JLC's proprietary 1,000 Hours Master Control certification — a six-week testing protocol conducted on the fully cased watch under simulated real-world conditions, exceeding COSC standards in both scope and duration. At 40mm and just under 11mm thick in stainless steel with a sunray-brushed silvered grey dial and dauphine hands, it's a dress watch that happens to be one of the most functionally complete travel complications you can put on your wrist.

Specifications

Model: Jaeger-LeCoultre Master Control Geographic

Reference: Q4128420

Caliber: Jaeger-LeCoultre 939AA — 32 jewels, 28,800 vph (4 Hz), 295 components, 1,000 Hours Master Control certified

Case Material: Stainless steel

Case Diameter: 40mm

Case Thickness: 10.96mm

Bezel: Fixed, smooth stainless steel

Crown: Pull/push, stainless steel (operates 24-city world time disc)

Crystal: Sapphire crystal with anti-reflection coating on inner surface

Caseback: Transparent sapphire crystal exhibition caseback

Dial: Silvered grey, sunray-brushed, gilt Arabic numerals and rhodium-finish applied hour markers, dauphine hands, crown-operated 24-city world time disc, pointer date, second time zone sub-dial with 24-hour indicator, day/night display, power reserve indicator

Strap: Light brown Novonappa vegetable-tanned calfskin leather

Clasp: Stainless steel deployant folding clasp

Movement: Automatic self-winding

Power Reserve: 70 hours

Water Resistance: 50 meters (5 bar)

Functions: Hours, minutes, central seconds, pointer date, second time zone, 24-city world time selection, 24-hour display, day/night indicator, power reserve indicator

Condition Report

Case: 10/10

Bezel: 10/10

Crystal: 10/10

Dial/Hands: 10/10

Strap: 10/10

Clasp/Buckle: 10/10

Caseback: 10/10

Polishing Status: Unpolished

Photos taken on strap at standard length, fitting approximately 16–20cm (6.3–7.9 inch) wrists.

Delivery Contents

Complete set — outer box, inner box, warranty card, instruction manual

Please refer to photos for full contents.

Service & Authenticity

The watch is running at 302 degrees of amplitude on the timegrapher. No service history on record. The original Jaeger-LeCoultre 8-year international warranty is active (card dated 06/01/2026), expiring June 2034.

Shipping & Legal

Ships from: Huntsville, AL

Shipping: Fully insured overnight with tracking provided

Shipping within CONUS only

Buyers are responsible for any applicable taxes and duties

Watch is sold in accordance with United States laws and regulations

Closing

All watches are inspected by our watchmakers for condition, authenticity, and functionality before sale. Feel free to reach out via messenger with any questions.