Strap for Big Crown ProPilot Altimeter Feet / Black Leather

The lug width is precisely 23mm, measured between the watch's attachment pins. This intermediate size sits between the common 22mm and 24mm standards, requiring specifically engineered straps. Accurate measurement of the attachment points is critical for proper fit and secure strap installation on the case.

Three primary options are recommended: an alligator strap with vegetable tanning (for formal-professional contexts), a traditionally tanned leather strap (for patina development and character), or a heavy cotton or polyamide NATO (for versatility and daily practicality). Selection depends on intended use and lifestyle context of this tool watch.

Use a dedicated spring bar tool or extractor to compress the attachment pins without forcing. Position the tip under each pin, applying gentle pressure until the old strap is released from its seat. Align the new strap's holes precisely with the pin positions and ensure both sides lock securely before wearing. Never use improvised tools such as screwdrivers.

Yes, provided they are purpose-designed for 23mm lug width. Compatibility hinges on correct attachment hole dimensions. Many artisanal manufacturers offer custom personalisation with precise digital calliper verification of case dimensions. We recommend always providing detailed case photographs or conducting millimetre-accurate measurement before ordering.

A quality leather strap (alligator or vegetable-tanned calf) under moderate use—approximately 3-4 days weekly—maintains structural integrity for 3-5 years. Longevity depends on solar exposure, environmental humidity, and cleaning frequency. Natural patina development is desired; stitch deterioration requires professional restoration from specialised artisans.