Strap for PR 100 Sport Gent Stainless Steel / Blue / Bracelet

The lug width (or strap width) of the Tissot PR 100 T101.610.11.041.00 is 20mm. This measurement refers to the horizontal distance between the two metal spring bars where the strap attaches to the case lugs. To verify compatibility with a replacement strap, measure this distance perpendicular to the lugs using a ruler. A measurement between 19.8–20.2mm confirms the correct specification for this model.

The ideal strap depends on intended usage and aesthetic preference. For formal elegance: alligator leather in cognac, dark brown, or black with natural tanning. For vintage-biographical style: calf leather with vegetable tanning, developing a rich patina over time. For sports versatility: sturdy cotton NATO in neutral colours (grey, black, navy blue). For humid environments: rubber faithful to the original Tissot colour palette. The 42mm PR 100 with 20mm lugs accommodates all these materials without structural compromise or case alteration.

Removal: position the watch on a soft mat with the strap facing upward. Locate the metal spring bars passing through the lugs. Use a spring bar tool (Y-shaped implement with slots at both ends) to gently compress the internal spring mechanism, releasing the strap from the first side, then the other. Do not force: the bar should slide out smoothly without excessive resistance. Installation: insert the spring bars through the holes of the new 20mm strap, ensuring horizontal alignment. Use the spring bar tool to compress the bar whilst inserting it into the second lug, confirming it is fully locked in place.

Yes, quality aftermarket straps are fully compatible with the Tissot PR 100 T101.610.11.041.00 provided the lug width is precisely 20mm. Premium materials such as alligator, calf leather with vegetable tanning, shell cordovan, and robust NATO do not damage the stainless steel case. Avoid straps with excessively wide lugs (over 20.5mm) or too narrow (under 19.5mm), as they may alter the spring bars or stress the case lugs. A properly dimensioned aftermarket strap extends watch longevity and permits aesthetic personalisation whilst preserving structural integrity.

Longevity depends on material, tanning method, and frequency of use. Alligator with vegetable tanning: 8–12 years with moderate use and regular maintenance (damp cloth cleaning, annual application of colourless balm). Calf leather with vegetable tanning: 6–10 years, developing visible patina after 2–3 years. Shell cordovan: up to 15 years, resisting physical stress due to superior fibre density. Cotton NATO: 4–6 years before stitch wear, though easily replaceable at modest cost. Rubber: 4–8 years, degradation accelerated by prolonged UV exposure and hot climates. To maximise lifespan: avoid frequent water immersion (except rubber), store the watch in a dry environment with strap detached, apply natural balms every six months to leather.