Jaeger-LeCoultre
Jaeger-LeCoultre Duomètre à Quantième Lunaire Q6042421
The Jaeger-LeCoultre Duomètre à Quantième Lunaire (reference Q6042421) is a 42.5 mm 18k pink gold watch with a silver dial. It runs on the manual caliber 381 with a 50-hour power reserve and is water resistant to 50 m. It is no longer in production.
Specifications
Case
- Reference
- Q6042421
- Collection
- Duomètre
- Case size
- 42.5 mm
- Case material
- 18k pink gold
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 50 m
- Bracelet / strap
- Alligator leather strap
Dial and bezel
- Dial
- Silver
Movement
- Movement
- Manual
- Caliber
- 381
- Power reserve
- 50 hours
- Functions
- Date, Moon phase, Small seconds
Production
- Production
- Discontinued
How it compares within the Duomètre family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| Q6042421 (This watch) | 42.5 mm | 18k pink gold | Silver | 381 | — |
| Q6012420 | — | Pink gold | — | — | — |
| Q6012421 | — | Pink gold | Silver | — | — |
| Q6016490 | — | Platinum | — | — | — |
| Q6042422 | — | Pink gold | — | — | — |
| Q6042522 | — | Pink gold | — | — | — |
| Q604848J | 42.5 mm | Stainless steel | Blue sunburst | 381 | 2025– |
| Q6086420 | — | Platinum | Silver | — | — |
| Q622252J | 42.5 mm | 18k pink gold | Silver | 391 | 2024– |
About the Duomètre family
The Duomètre was introduced in 2007 around the Dual-Wing concept: two separate energy systems in one movement, one for the timekeeping and one for the complication, so using the complication does not affect accuracy. Many models also show the time to a sixth of a second.
In 2024 Jaeger-LeCoultre renewed the line with models such as the Duomètre Chronograph Moon, and the catalog's references use calibers listed as 381 and 391. The catalog lists stainless steel, pink gold and platinum references. Dealers identify the function and metal and ask for service history, since the movements are complex.
Quick answers
- What size is the Jaeger-LeCoultre Duomètre à Quantième Lunaire Q6042421?
- The Jaeger-LeCoultre Duomètre à Quantième Lunaire Q6042421 has a 42.5 mm case.
- What movement does the Jaeger-LeCoultre Duomètre à Quantième Lunaire Q6042421 use?
- It uses the manual caliber 381, with a 50-hour power reserve.
- How water resistant is the Jaeger-LeCoultre Duomètre à Quantième Lunaire Q6042421?
- It is water resistant to 50 metres.
- Is the Jaeger-LeCoultre Duomètre à Quantième Lunaire Q6042421 still in production?
- Discontinued.
- What is the Jaeger-LeCoultre Duomètre à Quantième Lunaire Q6042421 made of?
- The case is 18k pink gold. Bracelet or strap: Alligator leather strap.
Catalog facts checked September 2026.