Jaeger-LeCoultre · Master

Strap for Master Chronograph Stainless Steel / Silver / Bracelet

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

Lug width

20mm

20 mm straps All Jaeger-LeCoultre

Lug width20 mm

Case diameter40 mm

Reference1538120

FamilyMaster

MovementJaeger-LeCoultre caliber 751A/1 Hours, Minutes | Date | Chronograph, Column wheel

CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

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Straps for the Master 1538120

Selected for the 20 mm lug width · workshop selection

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The Master 1538120, seen from the bench

The Jaeger-LeCoultre Master 1538120 is a column-wheel chronograph featuring the in-house caliber 751A with hours, minutes, date, and chronograph complications. The stainless steel case measures 40mm in diameter with a 20mm lug width, embodying the Master line's formal sobriety through a clean bezel and rigorous dial. Produced in the Vallée de Joux, this timepiece represents over 180 years of integrated manufacturing philosophy and technical expertise in mechanical watchmaking.

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