Strap for Modello Uno U1-GM Grimoldi

The Modello Uno U1-GM has a lug width of 22mm. This dimension is crucial for aftermarket strap compatibility and can be easily verified by using a calliper across the lug shoulders from one attachment pin to the other.

For the Modello Uno U1-GM, we recommend a premium NATO in absolute black to enhance the tool watch aesthetic, or calf leather with vegetable tanning if you desire sophistication with a patina that evolves over time. Alligator leather would also respect the minimalist design of this timepiece perfectly.

The Modello Uno U1-GM features direct lug attachments without spring bars. To change the strap, obtain a spring bar tool and gently unscrew the attachment pin from the lug shoulder. Remove the old strap and insert the new one, ensuring the pin is perfectly aligned before tightening.

Absolutely. Any artisanal strap with a 22mm lug width is compatible with the U1-GM. We recommend verifying that the buckle protrusion (or passant in the case of a NATO) does not interfere with the case bezel.

A natural leather strap (calf or alligator) on the U1-GM structure typically lasts 3-5 years with daily use, provided you rotate with other straps and perform proper maintenance. Vegetable-tanned leather develops a rich patina that masks imperfections, increasing the perception of longevity compared to industrial tannages.