Strap for Big Crown ProPilot Timer GMT Stainless Steel / Black / Fabric

The lug width of the Oris ProPilot 01 748 7756 4064-07 3 22 02LC is 22mm. This measurement is taken perpendicularly to the connecting pins between case and strap, from inner wall to inner wall. The 22mm dimension represents the ideal constructive calibre for the visual balance of this 44mm case.

For the ProPilot 01 748 7756 4064-07 3 22 02LC we primarily recommend alligator leather in vegetable tanning (black or dark brown) for maximum aesthetic coherence with the aviatory design. Alternatively, shell cordovan in cognac offers an evolving patina over time, or NATO in grey-blue for dynamic wear. Vulcanised rubber remains the ideal choice for humid environments and extreme temperatures.

Strap replacement requires a specialised tool called a spring bar remover. Position the tool horizontally against the connecting pins and apply gentle pressure to retract the internal springs, then extract the old strap. Insert the new strap ensuring the pins are fully seated within the lugs. Never force: a crisp click will indicate correct positioning. We recommend this operation be performed by a qualified watchmaker to avoid damage to the lugs.

Yes, any strap with 22mm lug width is compatible with the ProPilot 01 748 7756 4064-07 3 22 02LC. Milano Straps offers an extensive selection of 22mm straps in alligator, calf leather, NATO and rubber, all tested to guarantee measurement precision and construction quality conforming to aviatory standards.

A fine leather strap (alligator or shell cordovan) under daily use maintains structural integrity for 3–5 years, conditioned by environmental factors such as humidity, perspiration and UV exposure. Vegetable-tanned leather ages more elegantly than synthetics, developing patina. NATO straps in regenerated textile fibres guarantee superior longevity (5–7 years) due to reduced sensitivity to degrading factors. We recommend periodic cleaning with a soft cloth and storage away from excessive moisture.