Strap for Modello Uno x Esercito DLC

The lug width of the Unimatic Modello Uno U1-PAN is 22 millimetres. This specific dimension was chosen by the Milan-based engineers to maintain optimal proportions between the 40mm case and the strap, avoiding aesthetic gaps between components. Measuring lug width correctly is essential: use a digital calliper between the centres of the two upper spring bar holes to obtain the precise value.

For the Modello Uno U1-PAN, the ideal strap is vegetable-tanned leather from Tuscany, particularly in dark shades such as midnight blue or charcoal black. The natural texture of the leather, its capacity to develop patina over time, and the contrast with the black dial embody the minimalist philosophy of the timepiece. Full-grain calf leather and NATO straps in high-density nylon also represent valid options depending on intended use.

The strap on the Unimatic Modello Uno U1-PAN is replaced using a spring bar tool (two-pronged extractor), readily available from watch accessory retailers. Position the spring bar on the tool's tip, apply gentle pressure towards the case centre to compress it, and slide it out of the lug. Insert the new strap the same way, ensuring the spring bar is correctly seated on both sides. This is a straightforward operation requiring approximately two minutes and no specialist knowledge.

Any strap with a 22mm lug width is compatible with the Unimatic Modello Uno U1-PAN. When choosing an aftermarket strap, consider maximum thickness: the case base has limited space, so straps thicker than 4–4.5mm risk creating unwanted tension on the lugs. Artisanal full-grain leather straps of high quality maintain controlled thickness whilst guaranteeing durability over time, making them the preferred choice amongst enthusiasts.

The lifespan of a leather strap depends on frequency of use, environmental conditions, and tanning quality. A strap made from Tuscan vegetable-tanned leather subjected to daily wear maintains excellent elasticity and structural integrity for 3–5 years. Factors such as constant humidity, prolonged sun exposure, and perspiration can accelerate the natural ageing process. The patina that develops is part of the aesthetic journey: it does not necessarily indicate deterioration, but rather the acquisition of character. When the strap begins to crack or visibly loses elasticity, replacement with a new 22mm element is recommended.