Strap for BC3 Advanced Day Date Stainless Steel - DLC / Black / Rubber

The Oris BC3 01 735 7641 4364-07 4 22 05 features a lug width of 22mm. This dimension is specific to this model and is determined by the 42mm case size and the lug attachment geometry. When purchasing an aftermarket strap, ensure it is explicitly declared compatible with 22mm lugs for a perfect fit.

Strap selection depends on intended use and aesthetic preference. For a heritage and everyday interpretation, we recommend leather in vegetable tanning with coarse grain, which ages nobly. For intensive tactical or outdoor use, a NATO strap in regenerated yarns offers durability and practicality. A natural alligator strap elevates the watch towards sophistication without excess. FKM rubber is the ideal solution for wet or high-humidity environments.

Changing the strap on the Oris BC3 requires a dedicated tool (spring bar tool) to compress and remove the spring bars from the case lugs. Position the tool in the narrow space between the lug and spring bar, gently push downward to release the pin. Repeat on the opposite end. To install the new strap, slide a spring bar into the strap holes, align it with the lug seats and compress until you feel the insertion click. Verify stability by gently pulling.

Yes, the Oris BC3 01 735 7641 4364-07 4 22 05 is fully compatible with aftermarket 22mm straps. It is essential that the strap is explicitly certified for this lug width to avoid lateral gaps or misalignment. Milano Straps offers a dedicated collection of 22mm straps in multiple materials: vegetable-tanned leather, alligator, NATO, FKM rubber and English calf.

The lifespan of a leather strap varies based on material, usage and climatic conditions. A vegetable-tanned leather strap on an Oris BC3 worn daily in an urban environment has an average life of 3-4 years. Leather ages naturally: sun exposure, moisture and repeated movements darken the patina and soften the fibre. A regenerated calf or alligator strap, with proper care, can exceed 5-6 years. Night-time wear and reduced UV exposure significantly extend longevity.