Strap for Big Crown ProPilot Big Day Date 55th Reno Air Races

The Oris ProPilot 01 752 7698 4194-Set TS features a lug width of 22 millimetres. This measurement refers to the distance between the metal pins (lugs) that support the strap. It is essential to measure accurately by positioning the gauge between the narrowest points of the pins themselves, not on the case shoulders.

The choice depends on usage and context. For formal elegance, we recommend alligator leather with vegetable tanning or shell cordovan in brown tones. For everyday versatility, premium NATO straps in natural fibres (linen, cotton, silk) offer breathability and comfort. For humid or sports environments, vulcanised FKM rubber with grip texture ensures durability and traction. The aviation heritage of the watch is enhanced with dark blue, military green, or black finishes.

The strap is replaced by operating the lateral pins. You will need a spring bar tool to compress the internal springs of the pins and slide them out of the guides. Insert the new strap by aligning the holes with the pins, then reposition them in the case guides. Ensure that the pins are completely secured before wearing the watch. If you are inexperienced, consult a watchmaker.

Yes, any strap with a 22mm lug width will be compatible. However, verify that the thickness does not exceed the lateral guides of the case. Milanese artisanal straps are calculated to ensure a perfect fit and aesthetics coherent with case proportions. Avoid cheap generic straps that may not seat correctly on the pins.

Durability depends on material and usage. A quality alligator or shell cordovan, subjected to regular care (monthly cleaning, conditioning with natural oils every 3–6 months), can last 5–10 years. Standard calf leather requires more maintenance and typically lasts 2–4 years with moderate daily use. NATO straps and rubber tend to last 3–5 years if exposed to UV rays. Periodic strap replacement is an integral part of the aesthetic and functional enjoyment of the watch.