Unimatic · Modello Uno

Strap for Modello Uno U1S-8N Capri

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

Lug width22 mm
Case diameter42 mm
ReferenceUWK-U1S-8N
FamilyModello Uno
MovementSellita caliber SW200-1 a Hours, Minutes, Seconds | Date
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 Modello Uno UWK-U1S-8N

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Modello Uno UWK-U1S-8N, seen from the bench

The Unimatic Modello Uno features the automatic Sellita SW200-1 caliber with hour, minute, second and date indication. The watch has 22mm lugs and adopts a minimalist approach in the design. The UWK-U1S-8N reference is part of the brand's main collection.

Frequently asked questions

What is the lug width of the Unimatic Modello Uno UWK-U1S-8N?

The lug width of the Modello Uno UWK-U1S-8N is 22mm, measured between the two spring bar articulation pins. This dimension allows compatibility with a vast range of quality straps, from vegetable-tanned leather solutions to technical rubber and NATO bracelets.

Which is the best strap for the Unimatic Modello Uno?

The optimal choice depends on intended use. For formal elegance and natural patina: Tuscan leather with vegetable tanning. For tactile sophistication: alligator or shell cordovan. For daily practicality: nitrile rubber or nylon NATO. The satin-finished steel case pairs flawlessly with any of these solutions.

How do I change the strap on the UWK-U1S-8N?

Use a spring bar tool to gently push one of the elastic pins towards the case centre, releasing the spring bar assembly. Repeat on the other side. Insert the new strap by aligning the holes with the pins and press until you hear a click. Quick operation requiring no specialised tools.

Can I use an aftermarket strap on this watch?

Absolutely. The 22mm lug width of the Modello Uno is compatible with any certified aftermarket strap of matching width. Milano Straps offers a complete collection of solutions specifically certified for this dimension, ensuring compatibility and durability.

What is the lifespan of a leather strap on this timepiece?

A vegetable-tanned leather strap typically lasts 3-5 years with daily use and regular maintenance (cleaning with a damp cloth, air drying). Alligator leather is more durable (5-7 years). Longevity depends on moisture exposure, perspiration, and direct sunlight. The patina that develops is a sign of noble ageing, not degradation.

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