Unimatic · Modello Uno

Strap for Modello Uno U1-NU Nous Paris

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
ReferenceU1-NU
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

Straps for the Modello Uno U1-NU

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Modello Uno U1-NU, seen from the bench

The Unimatic Modello Uno U1-NU mounts the NH38 caliber with hour, minute and second indication. The watch features 22mm lugs and essential construction according to the brand's minimalist philosophy. The mechanical movement ensures basic timekeeping functions without additional complications.

Frequently asked questions

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

The lug width of the Unimatic U1-NU is 22mm. This is the internal distance between the two lugs protruding from the case. To verify the correct measurement, measure from the inner edge of one lug to the inner edge of the opposite lug: it should measure exactly 22mm. This dimension ensures compatibility with the widest selection of artisanal straps available.

Which strap pairs best with the Unimatic Modello Uno U1-NU?

Given the minimalist and instrumental philosophy of the U1-NU, a strap in vegetable-tanned Tuscan leather with vegetable tanning is recommended, preferably in dark brown or natural tones. The brushed texture or authentic patina amplifies the functional identity of the watch. Valid alternatives include cotton NATO straps or vulcanised rubber straps, ideal for casual and sports use.

How do I change the strap on my Unimatic Modello Uno U1-NU?

The strap is changed by removing the spring bars (pins) that connect the lugs to the case. Use a dedicated spring bar tool to remove the pins from the lugs, then insert the new strap by aligning the holes with the pins. Reinsert the pins with gentle pressure until they sit fully. If unsure, consult a specialist watchmaker.

What aftermarket straps are compatible with the Unimatic Modello Uno U1-NU?

All straps with a 22mm lug width are compatible with the U1-NU. You can choose from leather (calf, alligator, cordovan), woven fabrics (NATO, canvas), vulcanised rubber, and even Tropic straps. Always verify that the width is 22mm and that the spring bars are of the correct length (typically 24-26mm).

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

Durability depends on leather quality and usage patterns. A high-quality artisanal strap in vegetable-tanned Tuscan leather lasts an average of 3-5 years with daily wear, developing a fascinating natural patina. Factors such as sun exposure, humidity, and cleaning frequency affect longevity. Proper maintenance—periodic cleaning and moderate conditioning—significantly extends strap 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