Strap for PR 100 Chronograph Quartz 41 Stainless Steel / Black / Milanese

The Tissot PR 100 T101.417.11.051.01 features a 20mm lug width. This dimension is measured as the distance between the two fixed lugs on the case. To verify this measurement, use a digital calliper and measure the internal spacing between the attachment pins: the reading must be exactly 20mm. This measurement is critical to ensure compatibility with any third-party strap.

We recommend a premium alligator strap, which harmonizes perfectly with the elegant proportions of the case. If you prefer a calfskin option, select a vegetable-tanned leather that develops a natural patina over time. For sports or daily professional use, a NATO strap or FKM rubber offers uncompromising practicality and resistance to wear. Your choice ultimately depends on your lifestyle and intended occasions of use.

You will need a spring bar removal tool. Position the watch with the lug facing upward, insert the small hook of the tool into the lateral hole of the spring bar, and gently push to compress the internal spring. Withdraw the bar from the first side, then repeat on the opposite side. Align the new strap's eyelets with the case holes and reinsert the spring bars using gentle leverage until you hear or feel a clear click of secure engagement.

Yes, any strap with a 20mm lug width is fully compatible with your Tissot PR 100. High-quality aftermarket straps often feature superior finishing and materials that exceed factory standards, enabling complete personalisation of your timepiece. Ensure the strap is fitted with spring bars of the correct cross-sectional diameter (typically 1.8mm for this model) to prevent excessive play or looseness.

The lifespan of a leather strap depends on the tanning method and intensity of daily use. A vegetable-tanned alligator strap typically lasts 4-6 years under daily wear, whilst lower-grade calf leather may degrade within 2-3 years. Exposure to perspiration, moisture, and ultraviolet radiation accelerates ageing. With regular maintenance—annual cleaning and conditioning—you can significantly extend longevity. NATO and rubber straps have substantially longer lifespans, often exceeding 10 years without significant degradation.