Strap for WilliamsF1 Team Day Date 44 PVD / Black / Rubber

The lug width of the Oris Williams 01 735 7634 4765-07 4 24 44BNE is precisely 22mm. This specification is determined by the proportional relationship between the case diameter (44mm) and the architecture of the lateral bayonet attachments. Any aftermarket strap must respect this exact measurement to guarantee secure insertion and aesthetic coherence with the original design intent.

The choice depends on intended usage and personal aesthetic preference. For motorsport elegance, we recommend dark brown alligator or vegetable-tanned calf: both develop natural patina over time. For practicality and durability, navy NATO or black NATO preserves the sporting identity. For water activities or humid climates, black FKM rubber offers grip and resilience without compromise. All 22mm straps are compatible with the case lugs.

The strap is replaced by removing the lateral spring bars that connect both lugs to the case. Use a dedicated tool (spring bar tool) to apply controlled inward pressure, lifting slightly to free the first pin. Repeat for the second pin, then insert the new spring bars into the 22mm strap, ensuring the pins click correctly into the case seats. This operation requires care to avoid damage to the case.

Yes, any 22mm strap is universally compatible with this model's lugs, provided the spring bars are of standard dimensions (typically 1.8mm diameter for watches of this size). Milano Straps artisanal straps are constructed to respect international standard tolerances, guaranteeing secure insertion and zero mechanical play. Compatibility is verified before dispatch.

A quality leather strap (alligator or vegetable-tanned calf) under daily use typically lasts 3-5 years before replacement is recommended, depending on intensity of use, moisture exposure, and absorption of body oils. Vegetable tanning progressively softens, developing patina; alligator maintains more stable structure over time. Periodic strap replacement is recommended practice to preserve the aesthetic and mechanical integrity of the watch.