Strap for Navitimer 1 B01 Chronograph 43 Stainless Steel / Black / Calf / Pin

The lug width of the Breitling Navitimer AB0121211B1X2 is 22 mm. This measurement refers to the internal distance between the two lugs of the case and is the key parameter for selecting a compatible strap. It can be verified using a digital calliper directly on the watch.

The most suitable straps for the Navitimer AB0121211B1X2 are vegetable-tanned calf leather in cognac or tobacco — which enhances the aviator character of the watch — or alligator leather for formal occasions. A nylon NATO strap is the historically coherent choice given the watch's aeronautical DNA. In all cases, the lug width to match is 22 mm.

To replace the strap on the Navitimer AB0121211B1X2, the two spring bars securing the strap to the case lugs must be removed. A dedicated curved-tip screwdriver or a professional spring bar tool is required. Care must be taken to avoid scratching the stainless steel case. If in doubt, it is advisable to consult a watchmaker or the Casati Milano atelier.

Yes, a number of high-quality artisan aftermarket straps are compatible with the Navitimer AB0121211B1X2, provided they feature a lug width of 22 mm. Milano Straps offers a curated selection of leather, NATO and rubber straps, bespoke-made with customisable finishes and stitching. The artisan quality ensures a precise fit and an aesthetic profile in keeping with the calibre of the timepiece.

The longevity of a leather strap depends on the quality of the tanning, daily wear and maintenance. A well-made vegetable-tanned calf strap, worn regularly and periodically treated with nourishing cream, has an average lifespan of 2–4 years. Alligator or shell cordovan straps, owing to their denser fibre structure, can last considerably longer. Milano Straps straps are covered by an 18-month warranty against manufacturing defects.