Strap for WilliamsF1 Team Day Date 42 Stainless Steel / Silver / Rubber

The lug width (ansa measurement) of the Oris Williams 01 635 7613 4174-07 4 24 44 is precisely 24mm. This dimension corresponds perfectly to the 42mm case, ensuring harmonious visual proportions. You can measure the lug width using a digital calliper positioned on the internal centre between the two case lugs.

The choice depends on your usage and personal aesthetic. For formal elegance: alligator or vegetable-tanned calf with aged patina. For daily versatility: structured tanned calf. For motorsport authenticity: perforated rubber or military NATO. All materials are available in 24mm configuration at Milano Straps.

The strap is replaced via the standard case lugs. Use a spring bar tool to compress the lug springs and slide the worn strap horizontally. Insert the new 24mm strap lugs into the dedicated seats, ensuring the springs re-engage correctly. The procedure takes minutes and requires no specialist expertise.

Yes, all straps with 24mm lug width are compatible with this model. Milano Straps offers selections of alligator, shell cordovan, vegetable-tanned calf and rubber in this specific dimension. Compatibility is guaranteed at 100% as it matches the case specifications precisely.

A quality leather strap (alligator, shell cordovan or vegetable-tanned calf) has an average lifespan of 3–5 years with moderate daily use. Ageing is desirable: the patina evolves, colour deepens, texture enriches. Determining factors: frequency of use, sweat exposure, ambient humidity, and periodic maintenance with specialist products. Vegetable-tanned leather tends to age better than industrial tanneries, developing distinctive patina.