Jaeger-LeCoultre · Reverso

Strap for Grande Reverso Ultra Thin Duoface Bleu

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

Lug width20 mm
Case diameter27 mm
Reference378858J (aka: Q378858J)
FamilyReverso
MovementJaeger-LeCoultre caliber 854/1 hours, minutes, Additional 12 hours Hand (adjustable), day / Night Indication
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 Reverso 378858J (aka: Q378858J)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Reverso 378858J (aka: Q378858J), seen from the bench

The Jaeger-LeCoultre Reverso features the caliber 854/1 with hour, minute, adjustable 12-hour hand, and day/night indicator. The movement allows independent adjustment of a second time zone through the GMT function. The rectangular case maintains the characteristic flip-over dial mechanism.

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