Strap for Big Crown ProPilot Big Date Stainless Steel / Black / Black Leather

The lug width of the Oris ProPilot 01 751 7697 4164-07 5 20 19FC is 20mm. This dimension is Oris's specific standard for this model and determines compatibility with aftermarket straps. To verify measurement accuracy, position a ruler between the internal pins of the case: the distance between the two inner shoulders must correspond to 20mm.

Strap choice depends on intended use and aesthetic preference. For a classical-aviatory approach, a vegetable-tanned calf leather strap in havana or tobacco brown is recommended. For moisture robustness, FKM rubber or silicone is ideal. Nylon NATO straps in dark blue with subtle white stripes faithfully replicate the model's aeronautical heritage. For uncompromised luxury, alligator guarantees natural texture and durability over time.

Strap replacement is a straightforward operation. Position the watch on a soft surface (microfibre cloth). Locate the pins connecting the strap to the case at both extremities. Using a spring bar tool (specific pin tool), gently press downward on the small hook of the pin, creating sufficient space to extract the pin from its seat. Repeat on the other side. The new 20mm strap is inserted following the reverse procedure. If unfamiliar with the process, consult a professional watchmaker.

Any strap with a 20mm lug width is compatible with the ProPilot 01 751 7697 4164-07 5 20 19FC. On milanostraps.it, a specific range of 20mm straps is available in leather, alligator, shell cordovan, NATO and rubber, selected for aesthetic and structural compatibility with the Oris case. Always verify lug width before purchase to ensure perfect fit.

Leather strap longevity depends on material, use and maintenance. Vegetable-tanned calf, with natural patina, maintains functional characteristics for 3-4 years of daily use, developing an elegant dark patina over time. Alligator or shell cordovan offer superior durability (5-7 years) thanks to denser fibrous structure. FKM rubber has a longer lifecycle (8+ years) but loses flexibility with UV exposure. To extend lifespan, apply leather conditioner every 6 months and always dry after moisture contact.