Strap for Chronomat 44 GMT Stainless Steel / Onyx Black / Calf

The Breitling Chronomat B01 44 AB042011.BB56.433X has a lug width of 22mm. This is the standard measurement to use when selecting any compatible aftermarket strap, whether in leather, rubber or NATO nylon.

For the Chronomat B01 44 with its 44mm case, the most suitable straps are in Porosus alligator for formal occasions, Italian vegetable-tanned calfskin for everyday wear, or technical rubber and NATO for sporting contexts. The lug width is 22mm, ideally with a curved end to follow the case profile.

The strap on the Chronomat B01 44 is secured via standard 22mm spring bars. Using a dedicated springbar tool, you can replace it independently by pressing on the spring bar flange to release it from the lug. It is advisable to work on a soft surface to avoid scratching the case.

Yes. Any strap with a 22mm attachment is compatible with the Breitling Chronomat B01 44 AB042011.BB56.433X. Milanostraps.it offers a selection of Italian handcrafted straps in various materials, produced specifically for 22mm lugs with curved or straight ends.

The lifespan of a leather strap depends on the quality of the hide, the tanning process and daily usage. A high-quality vegetable-tanned calfskin strap, with proper care (conditioning cream every 2–3 months, protection from water), can last between 2 and 5 years whilst developing a beautiful patina. Premium alligator leather can exceed 5 years of regular use.