Unimatic · Modello Due

Strap for Modello Due U2-FN

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

Lug width22 mm
Case diameter39 mm
ReferenceU2-FN
FamilyModello Due
MovementTime Module caliber NH35A hours, minutes, seconds | date
Year2020
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 Due U2-FN

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Modello Due U2-FN, seen from the bench

The Unimatic Modello Due U2-FN is a minimalist Italian field watch with a 38.50 mm stainless steel 316L case and 22 mm lug width. It features the Time Module NH35A caliber with hours, minutes, seconds and date display. The watch embodies functional design principles with an uncluttered dial and essential indices, prioritizing clarity and reliability over complications.

Frequently asked questions

What is the lug width of the Unimatic Modello Due U2-FN?

The Unimatic Modello Due U2-FN features a 22-millimetre lug width. This measurement is the industry standard for numerous aftermarket strap options, ensuring compatibility with vegetable-tanned leather, technical fabric NATO straps, vulcanised rubber, and exotic leathers such as alligator. Our <a href="https://milanostraps.it/collections/cinturini-orologi-per-misura-ansa-22mm">22mm strap collection</a> offers artisanal solutions that integrate seamlessly with Unimatic case lugs.

Which strap should I choose for the Modello Due U2-FN?

The selection depends on intended use and aesthetic ambition. For a minimalist, militaristic look, we recommend a NATO in regenerated Italian-made fabric or canvas weave. For a more refined interpretation, hand-dyed vegetable leather in neutral tones such as dark brown or black amplifies the austere character of the U2-FN. For aquatic or humid environments, vulcanised rubber becomes the tactical choice. Our <a href="https://milanostraps.it/collections/cinturini-orologi-per-misura-ansa-22mm">22mm collection</a> enables you to personalise your Unimatic without quality compromise.

How do I change the strap on the Modello Due U2-FN?

Replacing the strap on the Modello Due U2-FN requires minimal tools: a dedicated spring bar removal tool in stainless steel (recommended to avoid scratching), or a Swiss-style penknife for experienced users. Position the watch on a soft surface, locate the small holes on the lugs, insert the tool with deliberate care and push the spring bar outward. Once extracted, the old strap releases cleanly. Clean the lug seats and position the new strap, reinserting the spring bar with decisive yet controlled motion. For risk-averse users, the Casati Milano atelier, by appointment, executes the change in minutes.

Are aftermarket straps compatible with the Unimatic Modello Due U2-FN?

Absolutely. The U2-FN features a 22-millimetre lug width, an exceptionally common measurement in horology. Milano Straps artisanal straps in vegetable leather, regenerated leather, NATO and rubber are specifically available in the 22mm specification, guaranteeing perfect geometric compatibility and construction quality comparable to premium suppliers. The substantive difference resides in the fact that Italian artisanal straps deliver texture, patina development and character that standard vendors cannot achieve.

What is the lifespan of a leather strap for the Modello Due U2-FN?

Longevity depends on maintenance discipline, climate exposure and usage intensity. A vegetable-tanned leather strap, such as those from Milano Straps, develops a progressive patina within the first 3–4 months and maintains structural functionality for 18–24 months under daily wear. In dry environments with regular care (gentle cleaning, occasional conditioning with specialist oils), durability extends easily to 3–4 years. Regenerated leather or exotic skins such as alligator, thanks to natural tannins and superior fibre density, offer greater resilience and age with marked elegance.

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