Strap for Big Pilot’s Watch Annual Calendar Edition “Antoine de Saint Exupéry” White Gold

The lug width of the IWC Big Pilot IW5027-09 is 22 mm. This measurement is the fundamental parameter for strap compatibility: ensure that your chosen strap measures exactly 22 mm in internal width to guarantee precise and secure fitting on the watch's lugs.

For the Big Pilot in white gold, alligator is the most recommended material: its natural texture enhances the contrast with the white metal, whilst its chromatic stability makes it versatile. Valid alternatives include vegetable-tanned calf leather for a vintage aesthetic, or NATO straps in grey/anthracite for a sporty-casual approach.

The strap is changed by gently sliding out the spring bars that connect the strap to the watch's lugs. Use a dedicated spring bar tool to apply light pressure on one of the pins, then slide the strap outward. Repeat the operation on the other side. To fit the new strap, align the holes with the lugs and insert the spring bars until you hear a secure click.

Yes, any strap with a 22 mm lug width is compatible with the Big Pilot IW5027-09. Straps are universal components: what matters is the width (22 mm) and, secondarily, the total length. Artisanal quality straps guarantee structural and aesthetic compatibility more coherent with the watch's luxury status than generic alternatives.

The lifespan of a leather strap depends on frequency of use, tanning type, and environmental conditions. On average, an artisanal quality strap lasts 4–7 years with moderate daily use. Alligator tends to last longer than calf due to its denser fibre. Frequent exposure to sunlight, water, and humidity shortens the strap's lifespan. A Casati Milano strap benefits from an 18-month warranty and can be refurbished or replaced over time.