Strap for Prim Sport 95

The lug width of the Prim Sport 95 is exactly 20 millimetres. This measurement is determined by the constructive geometry of the lugs forged onto the case. To verify, measure with callipers the distance between the inner walls of the lateral lugs, positioning the tool parallel to the dial.

A strap in vegetable-tanned leather represents the ideal choice: it honours both the constructive austerity of the movement and the Central European artisanal heritage of the watch. French calf with fine grain offers tactile softness, whilst a dark brown NATO strap maintains the original sporting vocation of the model.

Remove the lugs by inserting a flat tool (spring bar tool) into the hole beneath the lug, gently compressing the internal spring until the lug releases. Extract the exhausted strap. Position the new strap by aligning the holes, then reinsert the lug by compressing the spring until you hear a click. Verify that the lug is fully secured before wearing the watch.

Yes, any strap with a 20-millimetre lug width is compatible. Always verify that the width is exact and that the strap is thick enough to rest stably on the lugs without oscillating. High-quality straps, such as those in vegetable-tanned leather or shell cordovan, ensure durability and aesthetics coherent with the constructive dignity of the watch.

A quality leather strap, subjected to ordinary wear (moderate daily use), typically lasts 3–5 years before showing significant signs of wear such as cracks in the grain or deterioration of the edges. Vegetable tanning develops a desirable patina; French calf straps maintain structural integrity slightly longer. Durability depends on storage, sun exposure, and ambient humidity.