Strap for Big Crown ProPilot X Calibre 115 Titanium / Skeleton / Bracelet

The Oris ProPilot X 01 115 7759 7153-Set7 22 01TLC is fitted with 22-millimetre lug width. This dimension ensures correct proportions for the 44 mm case and provides access to a comprehensive range of specialist artisanal straps. To verify compatibility, measure the internal distance between the two lugs — it must be exactly 22 mm.

Selection depends on intended use and aesthetic preference. For formal or elegant contexts, we recommend dark brown alligator or vegetable-tanned calf leather; for sports or operational environments, a ballistic canvas NATO strap or technical rubber. Alligator offers sophisticated contrast against titanium, while NATO emphasises the model's avionic heritage.

Use a spring bar removal tool to release the elastic passants at the lugs. Insert the flat end of the tool into the lower hole of the spring bar, push upward to unlock the pin, then extract the strap. Reverse the procedure to install your new strap — ensure the springs click firmly into place at the lugs.

Yes, provided the strap is specified for 22 mm lugs. Many generic manufacturers offer 'universal' straps that are too narrow for this dimension; we recommend dedicated straps, where attachments are engineered to precise tolerances. Casati Milano artisanal straps for 22 mm guarantee optimal fit and construction.

A vegetable-tanned leather strap (alligator or calf) typically lasts 3–5 years with daily wear, depending on exposure to moisture, heat, and friction. Patina deepens over time, creating character. Rubber or NATO straps offer superior longevity (5–7+ years). Regular maintenance — air-drying after perspiration, annual conditioning of leather — significantly extends useful life.