Strap for Big Crown ProPilot GMT Stainless Steel / Grey / Bracelet

The lug width of the Oris ProPilot 01 748 7710 4063-07 8 22 19 is 22 millimetres. This measurement corresponds to the internal space between the two case lugs and is essential for selecting compatible straps. You can verify this measurement using a digital calliper or flexible ruler, positioning the tool perpendicular to the spring bars.

The ProPilot 01 748 7710 4063-07 8 22 19, with its 45-millimetre case and aeronautical character, finds its ideal pairing with sturdy leather straps (calf, alligator), NATO straps in regenerated fibres, or technical rubber straps. We discourage soft or excessively formal leather straps, as they would create an aesthetic contrast inconsistent with the watch's instrumental vocation. Your choice depends on intended use: rubber for sports, NATO for versatility, structured leather for mixed contexts.

To change the strap, locate the two spring bars (horizontal pins securing the strap to the case lugs). Using a flat tool (such as a dedicated spring bar tool or small coin), apply gentle pressure inward on one spring bar, leveraging outward to release the strap end. Repeat on the other side. Once the old strap is removed, align the new one with the case attachments and reinsert the spring bars into their seats until you hear a definitive click. Verify that the strap is symmetrical relative to the lugs.

Yes, any strap with a 22-millimetre lug width is mechanically compatible with the Oris ProPilot 01 748 7710 4063-07 8 22 19. However, we recommend selecting quality straps: an artisanal product in vegetable-tanned leather, a NATO in regenerated fibres, or technical rubber maintains the aesthetic and functional coherence of the watch. Avoid low-quality straps that would compromise the visual integrity of the instrument and pose mechanical failure risks over time.

The lifespan of a leather strap depends on tanning quality, usage frequency, and environmental conditions. A well-crafted vegetable-tanned leather strap maintains structural integrity for 3–5 years of regular use (5–6 days per week). Exposure to excess humidity, salty sweat, or prolonged direct sunlight significantly reduces this interval. To extend strap life, keep it dry, protect it from humidity with specialist balms every 12–18 months, and rotate alternatives (NATO or rubber) to reduce concentrated wear.