Strap for WilliamsF1 Team Day Date 40.5 Stainless Steel / Silver / Rubber

The lug width of the Oris Williams 01 635 7560 4161-07 4 25 01 is 35mm, a specification that reflects the collection's aerodynamic design philosophy. To verify compatibility, measure the distance between the spring bar holes using a digital calliper, measuring from the inner edge of one hole to the inner edge of the other.

For the Williams 01 635 7560 4161-07 4 25 01, we recommend an alligator strap with vegetable tanning for a formal-elegant look, or vegetable-tanned calf leather for a softer, more versatile feel. For sports use, choose vulcanised rubber or NATO canvas with a stainless steel deployante.

To change the strap on your Williams 01 635 7560 4161-07 4 25 01, use a spring bar tool (available from jewellers) to release the small elastic pins at six and twelve o'clock. Gently insert the tool tip under the spring, extract the pin and remove the old strap. Install the new strap by aligning the holes with the pins and pressing until they click into place.

Yes, Milano Straps aftermarket straps are fully compatible with the Williams 01 635 7560 4161-07 4 25 01. Simply ensure that the lug width is exactly 35mm and that the strap has been manufactured to precision standards for a perfect fit to the case lugs.

A naturally leather strap with vegetable tanning, if subjected to regular maintenance, typically lasts 2-3 years of daily wear. Lifespan depends on exposure to humidity, perspiration and frequency of use. Light monthly cleaning and application of protective balm every 6 months significantly extends the life of the strap.