Jaeger-LeCoultre · Master Ultra Thin

Strap for Master Ultra Thin Perpetual Stainless Steel / Silver / Boutique Edition

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

Lug width20 mm
Case diameter39 mm
Reference130842J (aka: Q130842J)
FamilyMaster Ultra Thin
MovementJaeger-LeCoultre caliber 868/1 hours, minutes, seconds | date, day, month, year indicator, perpetual calendar | moonphase
Year2013
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the Master Ultra Thin 130842J (aka: Q130842J)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Master Ultra Thin 130842J (aka: Q130842J), seen from the bench

The Master Ultra Thin Perpetual represents Jaeger-LeCoultre's interpretation of the perpetual calendar in an ultra-thin format. It houses the in-house caliber 868/1 with indications of hours, minutes, seconds, full date, perpetual calendar and moon phases. The slim case hosts one of the most elaborate complications of 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