Jaeger-LeCoultre · Duomètre

Strap for Duomètre Chronographe Pink Gold

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter42 mm
Reference6012521 (aka: Q6012521)
FamilyDuomètre
MovementJaeger-LeCoultre caliber 380A hours, minutes, seconds, Foudroyante seconds | Chronograph, column wheel | power reserve indicator
CaseRose Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Duomètre 6012521 (aka: Q6012521)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Duomètre 6012521 (aka: Q6012521), seen from the bench

The Jaeger-LeCoultre Duomètre à Chronographe, reference 6012521, features a revolutionary Dual-Wing architecture with two independent mechanisms—one for timekeeping and one for the chronograph—ensuring no interference during operation. The caliber 380A, a manufacture movement, incorporates centralized hours, minutes, seconds, column-wheel chronograph, and the rare foudroyante complication. The pink gold case measures 42 mm in diameter with a 20 mm lug width, combining assertive presence with balanced proportions for comfortable wear.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only