Strap for Projekt 01 Friends & Family

The lug width of the Kollokium Projekt 01 is 20.00 mm. This measurement refers to the distance between the two metal lugs where the strap is anchored via spring bar. To measure accurately, use a digital calliper positioned perpendicular to the lugs, measuring from the inside edge, without applying compression.

For the Projekt 01, we recommend alligator in vegetable tanning, which develops a patina similar to the case's satin steel finish. Alternatively, French calf leather with vegetable tanning offers superior tactile quality and visible ageing. For measured sportiness, cotton NATO webbing in garance dye maintains the project's minimalist aesthetic.

The strap is secured using spring bars. To remove: position the watch with lugs facing upwards, use a dedicated tool or thin blade to gently lift the spring bar, then extract the old strap. Insert the new strap by aligning the holes with the bar, press until you hear a click. Avoid excessive bending of the strap during the operation.

Yes, any strap with a 20.00 mm lug width is compatible with the Projekt 01. However, it is essential to verify exact measurements: even minor errors result in excessive play or mounting failure. We recommend straps from specialised artisanal manufacturers, which guarantee precise manufacturing tolerances and certified materials.

A quality leather strap with vegetable tanning has an average lifespan of 3–5 years with daily wear. Longevity depends on factors such as frequency of use, climate conditions, sun exposure and maintenance (regular cleaning, application of protective balms). Alligator or Franco-Swiss calf straps, if properly cared for, can achieve 7–10 years of legitimate wear.