Jaeger-LeCoultre Master Control Geographic — Ref. Q4128420
Video footage available upon request. Open to offers. Bracelet sizing service available.
About This Reference
The Master Control Geographic is Jaeger-LeCoultre's signature travel complication, and the Q4128420 represents its most refined iteration yet. A crown-operated city indicator allows the wearer to set a second time zone with a single turn, displaying it at 6 o'clock alongside a 24-hour ring that covers all 24 world time zones simultaneously — no pusher corrections, no guesswork. A power reserve indicator at 9 o'clock and a date window at 3 round out a dial that delivers serious complication depth without ever feeling cluttered. The silvered grey sunray-brushed dial, dauphine hands, and applied steel markers keep the presentation unmistakably Master Control — restrained, legible, and quietly authoritative. Inside, the in-house calibre 939AA with its 295 components draws on a 70-hour power reserve, and every Master Control timepiece undergoes JLC's proprietary 1,000-hour quality control test before leaving the Manufacture.
Specifications
Model: Jaeger-LeCoultre Master Control Geographic
Reference: Q4128420
Caliber: 939AA (Jaeger-LeCoultre manufacture, automatic, 295 components, 32 jewels, 28,800 vph / 4 Hz)
Case: Stainless steel, 40mm × 10.96mm
Bezel: Fixed stainless steel
Crystal: Sapphire with anti-reflective coating on inner surface
Caseback: Screw-in transparent sapphire
Dial: Silvered grey, sunray-brushed, steel dauphine hands and applied hour markers with lume
Functions: Hours, minutes, seconds, date at 3 o'clock, second time zone at 6 o'clock, 24-hour world time display, power reserve indicator at 9 o'clock, crown-operated 24-city indicator
Strap: Novonappa® vegetable-tanned brown calfskin leather with quick-release spring bars
Clasp: Stainless steel double-folding buckle (18mm)
Movement: Automatic
Power Reserve: 70 hours
Water Resistance: 50m / 5 bar
Condition Report
Overall condition is excellent. The watch is unpolished.
- Case: 10/10 — no visible marks
- Bezel: 10/10 — no visible marks
- Crystal: 10/10 — no visible marks
- Dial/Hands: 10/10 — no visible marks
- Strap: 10/10 — no visible marks
- Clasp: 10/10 — no visible marks
- Caseback: 10/10 — no visible marks
Photos taken on strap at standard length, fitting approximately 16–20cm (6.3–7.9 inch) wrists.
Delivery Contents
- Watch (complete set)
- Original inner and outer boxes
- Warranty card (dated 2023)
- All papers and booklets
- Please refer to photos for full contents
Service & Authenticity
The watch has been run on a timegrapher and is performing within specification. No prior service history. Standard 2-year manufacturer warranty has expired; extended 8-year coverage may apply if registered through Jaeger-LeCoultre Care.
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
Questions?
All watches are inspected by our watchmakers for condition, authenticity, and functionality before sale. Feel free to reach out via messenger with any questions.