Strap for Modello Uno U1-A

The Modello Uno U1-A features a lug width of 22mm. This dimension represents the deliberate proportional balance between the 41.5mm case diameter and the requirement for straps with substantial material texture. To verify measurement accuracy, position a millimetre ruler perpendicular to the watch lugs: the internal distance between the two vertical spring bar holes must correspond to exactly 22mm.

Strap selection depends upon intended use context and aesthetic preference. For a formal approach consistent with the design's minimalist philosophy, we recommend English calf leather with vegetable tanning in deep tones (burgundy, hazelnut), which patinas visibly over time. For sportier, informal contexts, a merino wool or cotton NATO maintains the severity of line. Alligator with vegetable tanning represents the most dramatic choice, emphasising grain through tactile contrast. Natural rubber straps reference the model's tool-watch origins with historical legitimacy.

Changing the Modello Uno U1-A strap requires a spring bar removal tool. Procedure: 1) insert the tool's pin into the vertical lug hole, applying gentle pressure to compress the internal spring; 2) extract the horizontal metal pin securing the strap; 3) remove the old strap; 4) align the new strap to the lug holes and reinsert the pin, ensuring it is fully seated. We recommend performing this operation on a soft surface (cloth, textile) to avoid scratching the case.

Yes, the U1-A is fully compatible with aftermarket straps of 22mm lug width. Milano Straps offers a specialised collection of Italian-made artisanal straps available in leather, NATO, alligator, calf and natural rubber, all configured with 22mm lugs. These straps are proportioned specifically to maintain aesthetic coherence with the Modello Uno's proportions and minimalist character, enabling material experimentation without constructive compromise.

Leather strap longevity depends upon frequency of wear, climatic conditions and tanning quality. A vegetable-tanned calf strap, worn daily, maintains structural integrity for 3–5 years; in sporadic use contexts, lifespan extends to 7–10 years. Alligator, owing to lacustrine epidermis structure, tends to last marginally longer (5–7 years under intensive wear). Factors shortening lifespan include: prolonged exposure to direct moisture, repeated saltwater contact, extreme thermal fluctuation. Periodic maintenance—cleaning with damp cloth, conditioning with specialist waxes—significantly extends useful life.