Unimatic · Modello Uno

Strap for Modello Uno x Esercito

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

Lug width22 mm
Case diameter40 mm
ReferenceU1-PA
FamilyModello Uno
MovementTime Module caliber NH38 hours, minutes, seconds
Year2022
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 U1-PA

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Modello Uno U1-PA, seen from the bench

The Unimatic Modello Uno U1-PA is a 40 mm stainless steel watch embodying Italian minimalist design. Powered by a Time Module caliber NH38 movement, it features a dial free of logos and a satin-finished case that prioritizes function over visual excess. The 22 mm lug width ensures balanced proportions on the wrist without visual heaviness, making it suitable for both formal and informal contexts.

Frequently asked questions

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

The lug width of the Modello Uno U1-PA is 22 mm. This measurement is specific to this model and ensures balanced proportions on the 40 mm case. To verify the correct measurement, use a calliper and measure the distance between the two lateral pins on the case where the strap sits.

What is the best strap for the Unimatic Modello Uno U1-PA?

A leather strap with vegetable tanning in dark brown is the most coherent choice with the minimalist aesthetic of the Modello Uno, developing natural patina over time. For intensive daily use, NATO straps in olive green or black offer versatility, whilst FKM rubber is ideal for high-humidity environments.

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

The Modello Uno uses standard spring bars. To replace the strap, use a spring bar tool to gently push the lateral pins inward, releasing the old strap from the case lugs. Insert the new strap by sliding the pins through the lug holes and release the tool to lock the strap in position.

Are aftermarket straps compatible with the Unimatic Modello Uno U1-PA?

Yes, any strap with a 22 mm lug width is compatible with the Modello Uno U1-PA. MilanoStraps offers a selection of straps in leather, NATO and rubber specifically certified for this width, with various colours and finishes.

How long does a leather strap last on a Unimatic Modello Uno U1-PA?

A high-quality artisanal leather strap has an average lifespan of 3-5 years with daily use, varying depending on frequency of wear, climate and care. Vegetable tanning develops patina that prolongs aesthetic life. If subjected to constant humidity, durability is reduced. Regular maintenance (cleaning with a damp cloth, annual conditioning) significantly extends longevity.

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