Strap for Big Crown ProPilot Chronograph Stainless Steel / Grey

The Oris ProPilot 01 774 7699 4063-07 5 22 19FC features a lug width of 22 millimetres. This dimension is specific to this model and ensures proper strap compatibility. To measure the lug width accurately, use a calliper positioned at the deepest point of the spring bar slot, between the lugs.

For a 44mm chronograph of this character, we recommend alligator or calf leather with vegetable tanning, in 4-5mm thickness with satin finish reflecting the instrument-grade design of the case. For tactical or maritime use, a 22mm NATO strap in regenerated fibre provides durability and unrestricted wear without aesthetic compromise. Casati Milano crafts bespoke straps with exact specifications tailored to your wrist.

Obtain a spring bar tool with a flat tip. Position the watch caseback upwards, insert the tool's tip into the spring clip hole, push gently outward to disengage the lug pin from its seat. Remove the old strap and align the new one's pins with the slots. The procedure requires precision but no specialised equipment. Alternatively, visit an authorised service centre.

Yes, 22mm lug width is a standard measurement with compatible aftermarket straps readily available. Milano Straps offers a comprehensive collection of 22mm straps in leather, NATO, alligator and rubber, all manufactured to European artisanal standards. Each strap is tested for fit and comfort on watches of similar calibre.

A quality leather strap with vegetable tanning maintains full function for 3–5 years with daily use and regular care (gentle cleaning with damp cloth, protection from direct heat). Patina develops over 6–12 months of wear, creating a natural protective finish. Store in a dry environment and avoid prolonged rain exposure. Milano Straps provides restoration service for worn straps.