Jaeger-LeCoultre · Duomètre
Strap for Duomètre Quantième Lunaire Pink Gold / Open
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
20mm
Lug width20 mm
Case diameter42 mm
Reference604242J (aka: Q604242J)
FamilyDuomètre
MovementJaeger-LeCoultre caliber 381 hours, minutes, seconds, Foudroyante seconds | date | moonphase
CaseRose Gold
Straps for the Duomètre 604242J (aka: Q604242J)
Selected for the 20 mm lug width · workshop selection
Black Rubberized Alligator Strap with Red Tribal Stitching€185
Matte Dark Gray Alligator Strap€195
Matte Black Alligator Strap — Minimal Stitching€149
Vintage Brown Calfskin Strap — Natural Patina€98
Hammered calfskin strap in cuoio€98
The Duomètre 604242J (aka: Q604242J), seen from the bench
The Jaeger-LeCoultre Duomètre Quantième Lunaire ref. 604242J features the Dual-Wing Movement concept with two independent mechanisms, each with separate power sources synchronized by a single regulator. This 42mm pink gold case houses the caliber JLC 381, delivering hours, minutes, seconds, flyback seconds, date, and moonphase across two independent modules for superior chronometric precision. The 20mm lug width maintains the proportional design philosophy of the Duomètre line, emphasizing dial presence despite the larger case diameter.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only