Strap for BC3 Advanced Day Date DLC / Grey / Fabric

The lug width of this Oris model is 22 millimetres. This measurement is the standard for Oris chronographs and mid-to-large diameter professional instruments. To verify, measure the distance between the two lateral spring bars with a calliper or consult a professional watchmaker.

Selection depends on intended usage: vegetable-tanned leather develops natural patina and suits daily and professional environments; recycled NATO fabric guarantees robustness and minimal maintenance whilst emphasising the aviation heritage; technical rubber is the solution for marine or professional environments where moisture resistance is paramount.

Use a spring bar tool to remove the lateral pins from the case. Insert the flat tip under each pin, lift gently until tension releases, then remove the worn strap. Align the new strap's holes with the pins and reinsert them until they click into place. Verify the strap is securely fastened before wearing the watch.

Yes, any aftermarket strap with 22mm lug width is compatible. Verify the strap width at the pin insertion point—it should be slightly less than 22mm for friction-free entry without play. Milano Straps offers artisanal 22mm straps in leather, NATO, and rubber, all tested for compatibility and durability.

A quality leather strap with vegetable tanning typically lasts 3–5 years of daily wear, depending on sun exposure, humidity, and frequency of use. Rubber or recycled NATO fabric lasts longer—7–10 years—as they are not subject to biological degradation. Regular maintenance (cleaning and occasional conditioning) significantly extends leather lifespan.