Strap for Big Crown ProPilot GMT Stainless Steel / Grey

The lug width (ansa width) of the Oris ProPilot 01 748 7710 4063-07 5 22 17FC is 22mm. This measurement represents the distance between the lugs that hold the strap on the case and is essential for selecting compatible aftermarket straps. Always verify this dimension before purchasing a replacement strap.

The best strap depends on intended use and personal preference. For formal elegance, we recommend Tuscan calf leather with vegetable tanning or alligator in brown or cognac tones. For sports and daily use, a heavyweight NATO fabric strap or vulcanised rubber ensures practicality and durability. Your choice should reflect the watch's purpose (professional vs. casual) and climate conditions.

Changing the strap requires a spring bar tool. Gently push the pin inward from one side to release the internal spring tension, then remove the pin completely. Repeat on the opposite side of the case. Insert the new strap by aligning the holes with the pins and reinserting them, ensuring the spring mechanism closes properly. If unsure, consult a professional watchmaker.

Yes, you can use quality aftermarket straps as long as they respect the 22mm lug width and standard pin diameters (typically 1.8mm). Ensure the strap is robust enough to support the weight of the 45mm stainless steel case and that materials suit a professional or adventurous context. Milano Straps offers a selection of artisanal straps specifically tested for this size.

The lifespan of a leather strap depends on the tanning method (vegetable or synthetic), ambient humidity, and frequency of use. High-quality Tuscan vegetable-tanned calf typically lasts 3-5 years with daily wear, developing a beautiful patina over time. Vulcanised rubber resists 4-8 years, whilst heavyweight NATO fabric can last 5-10 years if kept dry. Regular maintenance (gentle cleaning, proper drying) significantly extends useful life.