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Unimatic · Modello Quattro

Strap for Modello Quattro U4S-8N Capri

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

22mm
22 mm strapsAll Unimatic
Lug width22 mm
Case diameter42 mm
ReferenceUWK-U4S-8N
FamilyModello Quattro
MovementTime Module caliber NH38 hours, minutes, seconds
Year2023
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 Modello Quattro UWK-U4S-8N

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Modello Quattro UWK-U4S-8N, seen from the bench

The Unimatic Modello Quattro features the NH38 caliber with hour, minute and seconds indication. The watch has 22mm lugs and reference UWK-U4S-8N. The movement offers essential functions with automatic mechanical architecture.

Frequently asked questions

What is the lug width of the Unimatic Modello Quattro UWK-U4S-8N?

The lug width is 22mm, measured from spring bar hole to spring bar hole. This width is the modern watchmaking standard and offers broad compatibility with quality aftermarket straps.

Which strap pairs best with the Modello Quattro?

Tuscan vegetable-tanned leather in burnt earth or dark brown tones is the ideal pairing. The natural evolution of patina over time reflects the watch's minimalist philosophy. For alternative styles, alligator leather offers formal elegance, whilst cotton NATO straps add sporting practicality.

How do you change the strap on a 22mm lug width watch?

Use a spring bar removal tool, insert it into the lateral holes of the lug to relieve spring tension, then extract the pin with a gentle outward motion. Reverse the procedure to install the new strap. Never force the pin: doing so risks damaging the case.

Which aftermarket straps are compatible with the Quattro UWK-U4S-8N?

Any strap with a 22mm lug width is compatible. On milanostraps.it you'll find a dedicated collection of 22mm straps, available in vegetable-tanned leather, alligator, shell cordovan, NATO, and rubber. Always verify measurement before ordering.

How long does a leather strap last on this model?

A quality leather strap, if subjected to regular maintenance (gentle cleaning, natural drying, occasional application of specific balms), lasts between 3 and 5 years in daily use. Vegetable tanning typically lasts longer than chrome tanning, whilst also developing a more noble patina over time.

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