Strap for Cosmonaute Blacksteel / Black / Rubber / Folding

The Breitling Navitimer MB0210B6/BC79/200S/M20DSA.2 features a 22mm lug width. This measurement should be confirmed using a digital calliper positioned between the lugs at the spring bar attachment point, ensuring precise compatibility with any aftermarket strap.

For the 43mm Navitimer, the ideal strap depends on intended use. For formal occasions, a wide-grain alligator strap with a steel deployant clasp offers the highest aesthetic coherence. For daily or active wear, a vegetable-tanned calfskin or a robust nylon NATO strap provides the best balance of practicality and durability.

Changing the strap on this reference requires a spring bar tool or a dedicated fork-style instrument. Insert the tool into the lug notch, compress the spring bar, and slide the strap free. The operation does not require case opening and can be completed in a few minutes with the correct tools.

Yes, any 22mm strap is compatible with this reference. Milano Straps offers a curated selection of 22mm straps in leather, nylon and rubber, handcrafted from selected materials and available both online and as bespoke commissions through the Casati Milano atelier.

Strap longevity depends on the material and frequency of wear. A quality vegetable-tanned calfskin strap lasts approximately 2–3 years with daily use. Shell cordovan and alligator, owing to their denser fibre structure, can exceed 5 years while retaining form and appearance. Prolonged exposure to water and perspiration is the primary cause of wear; for humid environments, NATO or rubber straps are recommended.