Strap for Big Pilot Red Gold / Black / Orsini Buenos Aires

The lug width of the IWC Big Pilot IW5004-23 is 22mm. This measurement has been specifically engineered to maintain correct proportions relative to the substantial 46.20mm diameter case. To verify the lug width, measure the internal distance between the two lugs anchoring the strap to the case, from the lower base of one lug to the other.

For a precious metal timepiece of this calibre, genuine alligator leather with vegetable tanning represents the ideal choice. The natural texture of reptile skin harmonises perfectly with the lustrous red gold case, creating enduring aesthetic synergy. Valid alternatives include fine-grained calf leather, shell cordovan for those seeking deep lustre, or vulcanised rubber for technical and sports applications.

Strap replacement requires a specialised tool called a spring bar remover. Insert the flat tip of the tool into the lateral spaces of the anchor spring (spring bar) located beneath the case. Apply gentle pressure to compress the spring, allowing the lugs to slide out from the case attachment points. Execute the operation on both sides, then insert the new strap by aligning the lugs with the case attachment points and compressing the spring again until the lugs snap into position.

Yes, any strap with a 22mm lug width is fully compatible with the IW5004-23. At milanostraps.it you will find a comprehensive selection of 22mm straps in various materials, finishes and colorways, all ready for installation. Always verify that the lug width is precisely 22mm to ensure a precise fit and visual harmony with the Big Pilot's substantial case.

The lifespan of a leather strap depends on intensity of use and tanning method. A strap in alligator leather with vegetable tanning, properly maintained, typically lasts 3-4 years in daily wear. Natural leather ages visibly, developing a cherished patina. Avoid prolonged exposure to water and excessive humidity. To extend strap life, alternate with other models and allow the leather to dry completely. At Casati Milano, bespoke straps benefit from an 18-month warranty.