Strap for Navitimer 01 46 Stainless Steel / Red Gold / Black / Calf

The Breitling Navitimer UB012721.BE18.439X has a lug width of 24mm. 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 is a typical measurement for large-format Navitimers (46mm case diameter) and requires straps manufactured specifically to this width.

For this bi-metallic reference in Red Gold and Stainless Steel, an alligator strap — in glossy finish to complement the rose gold, or matte to emphasise the steel — is the most coherent choice in terms of materials. Vegetable-tanned calf leather suits everyday wear, developing a personal patina over time. Shell cordovan is the purist's choice for its density and longevity. For sportier contexts, NATO or rubber straps offer practicality and moisture resistance.

Strap replacement requires a spring bar tool, a bifurcated-tip instrument that compresses the spring bars, allowing the strap to be removed from the lugs. It is a straightforward procedure, though care must be taken to avoid scratching the case. Alternatively, any watchmaker or the Casati Milano atelier can handle the swap in a matter of minutes.

Yes. Any strap manufactured with a 24mm attachment width is technically compatible. Milanostraps.it offers a curated selection of artisan straps in various materials, all made to the 24mm lug width and designed specifically for large-format watches such as this Navitimer. All straps are Italian handcrafted and come with an 18-month production warranty.

Longevity depends on the material and usage. A quality calf leather strap, with standard care (avoiding prolonged contact with water and perspiration, occasional conditioning), typically lasts 2–4 years. Alligator, thanks to its denser and more resilient structure, can exceed 5 years. Shell cordovan offers the greatest structural durability. The Casati Milano warranty covers manufacturing defects for 18 months.