Strap for WilliamsF1 Team Chronograph 45 Stainless Steel / Black / Bracelet

The lug width (or lug size) of this Oris chronograph is 24mm. This measurement refers to the distance between the shoulders of the lugs—the points where the strap connects to the case. This dimension is standard for mid-range sports chronographs and provides access to a broad range of artisanal straps of excellent quality. To verify compatibility with your specific model, measure the space between the two spring bars that anchor the strap to the case, at the point where the leather meets the metal.

For a 45mm racing chronograph like the Williams, we recommend first and foremost a calf leather with vegetable tanning in tobacco brown or charcoal black: the patina that develops over time reinforces the watch's sporting identity, and the material naturally resists humidity. Alternatively, alligator leather with medium grain creates a sophisticated aesthetic contrast and imparts an incomparable tactile gravitas. For intensive daily use, a NATO strap in cordura or an FKM rubber model ensures absolute durability and minimal maintenance requirements.

The procedure is straightforward: obtain a spring bar tool or a small flathead screwdriver. Position the watch securely on a soft surface (a cloth), then insert your tool between the spring and the pin of the lug. Apply gentle lateral pressure to release the spring from one side, then carefully withdraw the pin. Repeat on the other side. The new strap (24mm lug width) should be reinserted in the same manner, ensuring the springs are firmly anchored on both sides.

Absolutely. Quality aftermarket straps (leather, NATO, rubber) are compatible with any watch fitted with 24mm lugs. It is important to verify that the strap is constructed with a lug (the terminal portion that inserts into the case) of the same width. Milano Straps offers a complete selection of artisanal 24mm straps in Italian leather, technical fabrics, and natural rubber, all crafted with meticulous attention to construction details and visual proportions.

Longevity depends on the tanning method and usage patterns. Vegetable-tanned calf leather, subjected to moderate wear (daily wear), maintains structural integrity for 5–7 years before replacement is necessary. Alligator leather, thanks to its superior density and natural fibre resistance, can last 10–15 years. Shell cordovan straps are renowned for accompanying watches for three decades. Natural rubber, less susceptible to oxidation and moisture damage, has a lifespan comparable to calf leather. Factors such as climate, sun exposure, and frequency of wear significantly alter these timelines.