Strap for Big Crown ProPilot GLC / Red

The lug width is 20 millimetres. This dimension is specific to the ProPilot model and represents a professional standard in Oris's aeronautical collections. To verify it, position a digital calliper perpendicular to the inner edges of the pins that retain the strap.

It depends on intended use. For an elegant daily context, we recommend vegetable-tanned leather with fine grain, which develops homogeneous patina over time. For humid environments or navigation, a NATO strap in synthetic fabric ensures rapid drainage. For extreme performance, high-tech rubber with honeycomb texture provides maximum grip on wet surfaces.

Use a spring bar tool. Position the tool's flat screwdriver on the small hole located on the case's inner side, next to the pin. Gently push the pin towards the case centre to release spring tension. Once one end is freed, remove the old strap and insert the new one by sliding the pin into the corresponding hole.

Yes, provided it is certified for a 20 millimetre lug width. Verify that the total length of the strap (measured from lug to lug) is compatible with the case geometry. Milanostraps offers a collection of handmade 20mm straps in leather, NATO, and rubber, specifically tested on timepieces with this lug width.

A high-quality leather strap, vegetable-tanned, has an average lifespan of 3–5 years with daily use, provided adequate maintenance is observed: protect from prolonged rain, avoid direct contact with acidic perspiration, apply natural conditioner every 6 months. Longevity depends on tanning type and environment of use. A NATO or rubber strap lasts potentially 7–10 years without maintenance.