Strap for Big Crown ProPilot GMT Rega Fleet AgustaWestland Da Vinci - HB-ZRW

The lug width of the Oris ProPilot 01 798 7773 4284 HB-ZRW-Set is 20 millimetres. This dimension is the standard for the 41.50mm case and is compatible with most contemporary artisanal straps. You can verify this measurement by measuring the internal space between the two lugs at their base of attachment to the case.

There is no single best choice—it depends on intended use. For formal or semi-formal contexts, an alligator strap with vegetable tanning enhances the watch's sobriety. For daily or sport use, a ballistic nylon NATO offers durability and practicality. Vulcanised rubber is ideal for intensive aviation or water use. Each of these options, in skilled hands, transforms the wearing experience of the ProPilot.

Strap replacement requires a spring bar tool to extract the spring bars connecting the strap to the lugs. Insert the tool into the space between lug and strap, compress the internal spring and detach the strap. To mount the new strap, align the spring bars with the strap ends and insert them into the case lugs, ensuring they are firmly secured. If unfamiliar with the procedure, Atelier Casati Milano offers professional strap-change service.

Yes, any strap with a 20mm lug width is compatible with the ProPilot 01 798 7773 4284 HB-ZRW-Set. On milanostraps.it you will find a selection of artisanal straps in leather, NATO and rubber, all available in 20mm width. Always ensure that the spring bars used are stainless steel and of correct diameter.

A high-quality artisanal leather strap, with vegetable tanning and professional finishing, typically lasts 3 to 5 years with moderate daily use. Longevity depends on use conditions (exposure to moisture, sweat, UV) and maintenance (regular cleaning, drying). A well-maintained alligator or calf strap may last beyond 5 years. Vulcanised rubber and NATO generally have shorter lifespan but remain practical under intensive use.