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Unimatic · Modello Uno

Strap for Modello Uno U1-DL Luisaviaroma

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
ReferenceU1-DL
FamilyModello Uno
MovementTime Module caliber NH38 hours, minutes, seconds
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 Uno U1-DL

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Modello Uno U1-DL, seen from the bench

The Unimatic Modello Uno U1-DL is a 41.5mm stainless steel watch embodying contemporary Italian watchmaking philosophy. It features the Time Module NH38 manual movement, a brushed steel case with a fully matte dial displaying only hours, minutes, and seconds without complications. The 22mm lug width is deliberately proportioned to the case diameter, determining strap compatibility and visual balance on the wrist.

Frequently asked questions

What is the exact lug width of the Unimatic Modello Uno U1-DL?

The Unimatic Modello Uno U1-DL features a lug width of precisely 22mm. This measurement is critical for selecting compatible straps: any strap with a 22mm lug width will fit the case attachment points perfectly. Verify this dimension by placing a calliper or ruler between the two lugs where the strap attaches to the case.

Which strap pairs best with the Modello Uno U1-DL?

We recommend a strap crafted from vegetable-tanned Tuscan leather for the Modello Uno U1-DL, particularly in Burnt Tobacco or Cognac shades. These materials emphasise the watch's minimalist character and Italian design heritage. For a sportier aesthetic, a dark blue NATO strap or black calf leather offer versatility and durability. Your choice depends on daily usage and personal colour preference.

How do I change the strap on a Modello Uno U1-DL?

Strap replacement on the Unimatic Modello Uno U1-DL is accomplished via standard spring bar attachments. Using a dedicated spring bar tool or multi-purpose watch tool, gently press the spring mechanism from one side, remove the bar, and extract the old strap. Position the spring bar through the new strap (ensuring the lug width is exactly 22mm), align the holes, and reinser the bar until you hear and feel the click of secure closure.

Can I use a generic aftermarket strap on a Modello Uno U1-DL?

Yes, provided the lug width is precisely 22mm. Countless aftermarket straps—leather, alligator, calf, rubber, NATO—are compatible. We recommend selecting specialised manufacturers that guarantee construction quality and finishing standards consistent with the precision engineering of the Modello Uno. An inferior strap undermines both the tactile and aesthetic experience of such a refined instrument.

What is the service life of a leather strap on a Modello Uno U1-DL worn daily?

Leather strap longevity depends on tanning method and usage patterns. A Tuscan vegetable-tanned leather strap, worn daily, typically lasts 3–5 years before replacement, developing a beautiful patina throughout. Calf leather straps tend to have a slightly shorter lifespan (2–4 years) due to lower leather density. Alligator, being denser, may last 5–7 years. Regular maintenance—gentle cleaning and storage in dry environments—substantially extends service life.

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