Strap for Big Crown ProPilot Altimeter Feet / Grey Textile

The lug width of this model is 23 mm, exclusive to the ProPilot oversized series. This extraordinary dimension is a direct consequence of the 47 mm case diameter and ensures correct proportions and balanced weight distribution on the wrist. It is not interchangeable with 20 or 22 mm straps.

The choice depends on intended use. Vegetable-tanned alligator in ebony tonality reinforces formal contexts and amplifies the sartorial register. Shell cordovan leather develops a rich bourbon patina with age, ideal for those who appreciate natural ageing. Military-grade nylon NATO in grey emphasises the functional and instrumental nature of the timepiece. Vulcanised rubber with titanium deployante is recommended for marine environments and high-temperature conditions.

Remove the watch from its current strap using a spring bar tool. Insert the tool into the small hole at the base of the lug, gently compressing the internal spring to unlock the lug from the case. Repeat on the opposite side. To install a new strap, insert both lugs into the corresponding lug holes, ensuring they click fully into position. Never force: a correctly inserted lug engages with an audible click.

Yes, provided the strap is specifically designed for 23 mm lugs. Many universal straps on the market are calibrated for 20 or 22 mm widths and will not fit correctly. Always verify that passage through the lug holes is fluid and that clearance is less than 0.5 mm. Bespoke artisanal straps guarantee maximum geometric compatibility.

Durability varies according to tannage method, leather quality, and intensity of use. High-quality vegetable-tanned leather lasts an average of 3–5 years with daily wear, developing a desirable patina over time. Industrially-tanned leathers deteriorate more rapidly, often within 18–24 months. Prolonged moisture exposure significantly shortens strap lifespan. Proper maintenance—drying after water contact, periodic conditioning with natural oils—substantially extends strap longevity.