Strap for Big Crown ProPilot Big Day Date Stainless Steel / Blue / Leather

The lug width of the Oris ProPilot 01 752 7760 4065-07 5 22 07LC is 22 millimetres. This measurement refers to the distance between the two metal bar ends that insert into the lugs of the watch case. We recommend measuring directly with a digital calliper to ensure precision, as accuracy is crucial for proper strap fitment without play or excessive tightness.

For the 44-millimetre ProPilot, we recommend a vegetable-tanned Tuscan leather strap in dark brown or hazel tones. This material preserves the watch's technical character whilst adding understated elegance. Alternatively, an authentic alligator strap with vegetable tanning represents a premium choice. For more sportive applications, NATO or natural rubber straps are ideal, particularly during summer months or for water-based activities.

The ProPilot strap is changed using spring bars: small spring-loaded pins that hold the strap to the case lugs. Using a dedicated tool (spring bar tool) or a small flathead screwdriver, gently push the pin inward to release the strap from one lug, then withdraw it. Repeat at the other end. Insert the new strap in reverse, ensuring the strap's bar ends are correctly aligned within the case lugs.

Yes, any strap with a 22-millimetre lug width is compatible with the ProPilot. Compatibility depends solely on the nominal 22mm measurement. Before purchase, verify that the strap you desire specifies this dimension. Milano Straps offers a curated selection of 22-millimetre straps crafted with premium materials and Italian artisanship, all verified for compatibility with models such as your Oris.

The lifespan of a vegetable-tanned leather strap depends on intensity of wear and exposure to environmental factors. With moderate daily use, a quality artisanal strap typically lasts between 2 and 4 years. If worn during intense sporting activities, prolonged sun exposure, or contact with salt water, durability decreases to 12–18 months. The beauty of vegetable tanning lies in the ability to replace the strap effortlessly, allowing the owner to rotate multiple straps over time whilst preserving the original strap as a historical piece.