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

The Oris ProPilot 01 752 7760 4065-07 3 22 05LC features a lug width of 22mm. This dimension is specific to the 44mm case model and is proportioned to the case's mass. To verify, measure the internal space between the two horizontal case lugs using a digital calliper.

For the ProPilot, we recommend vegetable-tanned leather in cognac brown or black colourways, echoing the heritage of historical aviation instruments. Alternatively, NATO fabrics in dark blue tones or grey anthracite FKM rubber straps maintain the model's technical character. Selection depends on environment of use and personal aesthetic preferences.

Strap replacement requires a spring bar tool. Position the watch on a stable surface, locate the spring bars connecting the strap to the case, and use the spring bar tool to compress the internal spring and release the bars. Repeat on the opposite lug. Installation of the new strap follows the reverse procedure.

Yes, any strap with a 22mm lug width is compatible with the ProPilot. However, to ensure optimal comfort and visual proportion, verify that the strap's total width does not exceed the case profile. Milano Straps maintains a curated selection of 22mm straps designed for ProPilot-category models.

Leather strap longevity depends on tanning quality and frequency of use. A premium vegetable-tanned leather strap has an average lifespan of 3–5 years with daily wear, extendable to 7–10 years with consistent maintenance (cleaning, occasional conditioning, drying after moisture exposure). Rubber or NATO fabric straps typically last longer, up to 10–15 years with proper storage.