Strap for Modello Uno U1-MLM Massena Lab

The lug width of the U1-MLM is precisely 22mm. This specification is critical when purchasing an aftermarket strap. To verify, use a digital calliper or ruler to measure the external distance between the two case lugs: it must be exactly 22mm. Even minor deviations of 0.5mm will make installation difficult or impossible.

This depends on your use case and aesthetic preference. For formal elegance, vegetable-tanned leather (calfskin or alligator) is recommended, developing natural patina over time. For daily practicality, cotton-nylon NATO straps offer quick changes and durability. For maximum versatility, technical FKM rubber in black maintains the tool watch character without requiring maintenance.

Acquire a spring bar remover (a small steel lever). Place the watch face-down. Insert the tip of the remover into one of the lateral gaps between the case and strap, gently pushing outward to release spring bar tension. Once one side is disengaged, remove the old strap. Align the new strap with the case lugs and press until you hear the spring bar click shut. Repeat for the opposite side. The entire operation takes under two minutes.

Absolutely, and it is strongly recommended among enthusiasts. The U1-MLM was explicitly engineered to accept standard 22mm straps. Artisanal vegetable-tanned leather straps, particularly those with soft passants, will amplify the sophistication of the watch and guarantee unique patina development over time—impossible to replicate with an original strap.

A quality vegetable-tanned strap, with proper care, lasts between 3 and 6 years of daily wear. Longevity depends on climate, frequency of wear, and maintenance. Protecting the strap from prolonged rain and applying leather conditioner every 12 months extends its lifespan significantly. When the strap eventually wears, the advantage of a standard 22mm lug width is the ease of replacement with a new strap.