Jaeger-LeCoultre · Reverso

Strap for Reverso Classic Large Duoface Small Seconds Stainless Steel / Silver / Fagliano

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

Lug width20 mm
Case diameter28 mm
Reference3848422 (aka: Q3848422)
FamilyReverso
MovementJaeger-LeCoultre caliber 854A/2 hours, minutes, Additional 12 hours Hand (adjustable), day / Night Indication
Year2018
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 3848422 (aka: Q3848422)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Reverso 3848422 (aka: Q3848422), seen from the bench

The Jaeger-LeCoultre Reverso Classic Large Duoface Small Seconds 3848422 (Q3848422) represents the contemporary evolution of an icon born in 1931. The articulated rectangular case with its exclusive reversible rotation system embodies constructive purism that has remained intact for nearly a century. The stainless steel case measures 28.30 mm in width and houses the caliber 854A/2 movement, featuring hours, minutes, an independently adjustable 12-hour hand, and day/night indication. The 20 mm lug width is precisely determined by the case geometry and ensures proper strap placement without play, which is critical for interchangeability on this reversible timepiece.

Frequently asked questions

What is the lug width of the Jaeger-LeCoultre Reverso 3848422?

The Jaeger-LeCoultre Reverso 3848422 features a 20 mm lug width. This technical specification is essential for sourcing a compatible replacement strap. Measure the internal lug seat with a digital calliper to verify accuracy before ordering an aftermarket strap.

What is the best strap for the Reverso 3848422?

We recommend alligator leather with vegetable tanning in dark brown or burgundy tones, alternatively premium Hermès-grade calf leather. These materials enhance the rectangular geometry of the case and naturally complement the stainless steel. Cognac-toned shell cordovan is ideal if you seek a more distinctive signature with a patina that ages beautifully over time.

How do you change the strap on a Jaeger-LeCoultre Reverso?

The Reverso 3848422 utilises standard fixed lugs. Remove the current strap by using a spring bar remover tool to extract the metal bar from the lugs, or consult a qualified watchmaker. Insert the new strap into the 20 mm lug seat, ensuring the spring bar returns to position. Never force: the strap should enter the seat smoothly.

Can I fit an aftermarket compatible strap on the Reverso 3848422?

Yes, any strap with a 20 mm lug width is compatible with the 3848422. We recommend bespoke artisanal straps to guarantee construction quality and finishing standards coherent with the watch's sophistication. Always verify that the supplier explicitly states 20 mm compatibility and that the strap features quality hardware and finishing.

How long does a leather strap last on the Reverso 3848422?

Strap longevity depends on usage intensity and material quality. Vegetable-tanned alligator of sartorial grade can last 5–8 years with moderate daily wear. Shell cordovan, owing to its intrinsic density, achieves 10+ years. Calf leather typically lasts 3–5 years under daily use. With regular maintenance—light conditioning and moisture protection—you can significantly extend strap lifespan.

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