Strap for WilliamsF1 Team Chronograph 45 PVD / Black / Bracelet

The lug width of the Oris Williams 01 673 7563 4754-07 4 27 01B is 27 mm. This is the distance between the two lugs of the case where the strap is attached. It is essential to verify that the aftermarket strap has exactly 27 mm width to ensure correct fit without play or forcing.

The choice depends on use and aesthetic preference. For pure elegance, satin-finished black alligator offers three-dimensional texture and natural grip. For sustainability, vegetable-tanned calf develops patina over time. For sportiness and practicality, a NATO strap in technical fabric or FKM rubber guarantee durability and low maintenance. All these materials are available in the 27 mm width compatible with this reference.

The strap is changed by removing the spring bar pin connecting the strap to the case. Use a dedicated spring bar tool to carefully extract the pin from one side, slide out the old strap, and insert the new 27 mm strap by snapping the pin into the case lug holes. Proceed carefully to avoid scratching the case: at Casati Milano, the bespoke atelier of milanostraps.it, professional strap change is available by appointment.

Yes, the Oris Williams accepts any quality aftermarket strap provided it has a lug width of 27 mm. milanostraps.it offers a curated selection of artisanal straps in this size: from leather (alligator, calf, shell cordovan) to fabrics (NATO, canvas), to synthetic materials (rubber, silicone). All available straps are tested for compatibility and build quality.

Lifespan depends on material and use. A quality artisan alligator strap, with regular care (gentle cleaning with soft cloth, light conditioning annually), typically lasts 5-7 years even with daily use. Vegetable-tanned calf resists 4-6 years and improves aesthetically over time through patina development. A technical fabric NATO lasts 3-5 years and tolerates greater stress. FKM rubber has the most variable lifespan (2-4 years) as it is subject to oxidation. Artisanal straps made with traditional techniques, such as those from milanostraps.it, generally present greater longevity compared to standard industrial production.