Strap for Unimatic Modello Uno U1S

The lug width of the Unimatic Modello Uno U1S is 22mm. This dimension is specific to the model and is determined by the spacing between the lugs of the 41mm case. When selecting a strap, ensure the width is exactly 22mm for proper compatibility.

The choice depends on intended use. For daily and sports wear, a NATO strap in technical fabric or vulcanised rubber offers superior versatility and grip. For formal or semi-formal contexts, a leather strap with vegetable tanning provides elegance without compromising the tool watch philosophy. A dark alligator leather strap further enhances the technical character of the case.

The U1S uses a standard lug system that allows manual strap replacement via spring bars. Gently remove the two lateral spring bars using a spring bar tool, extract the old strap and insert the new one, ensuring the strap terminals are correctly seated. Professional watchmaker assistance is not required for this operation.

Yes, provided the strap has a 22mm lug width. Artisanal full-grain leather or military-grade rubber straps are perfectly compatible. Ensure the strap thickness does not exceed 3.5mm to avoid friction with the case. Our 22mm straps are tested and verified for this size.

Longevity depends on tanning and usage patterns. A vegetable-tanned leather strap, if regularly maintained (monthly cleaning, bi-annual conditioning), maintains aesthetic and functional integrity for 3-5 years of daily wear. The patina that develops over time is a desired characteristic, not a defect. Vulcanised rubber offers superior durability, up to 7-8 years, with minimal maintenance requirements.