Strap for Navitimer B01 Chronograph 41 Stainless Steel / Blue / Bracelet

The Breitling Navitimer AB0139241C1A1 has a lug width of 22mm. This measurement is taken internally between the two lugs, close to the case, using a digital calliper. It is one of the most common widths among large chronographs, ensuring broad compatibility with aftermarket straps.

For the Navitimer AB0139241C1A1, alligator straps with caiman grain or vegetable-tanned calf leather complement the instrument-driven character of the watch, developing an authentic patina over time. For sporting use, a ballistic nylon NATO or vulcanised rubber strap provides both durability and stylistic coherence with the model's aviation heritage. A deployant clasp is recommended to preserve the leather and ensure stability on the wrist.

The strap on the Navitimer AB0139241C1A1 is replaced using standard 22mm spring bars. Using a spring bar tool, compress the bar laterally until it disengages from the lug. No case disassembly is required. It is advisable to work on a soft surface to avoid scratching the case, and to ensure the replacement spring bars are the correct length and diameter for Breitling lugs.

Yes, the Navitimer AB0139241C1A1 uses standard 22mm spring bars, compatible with the vast majority of quality aftermarket straps. It is important to check the lug profile — semi-curved — to ensure a correct fit. Milanostraps.it offers a curated selection of handcrafted 22mm straps compatible with this Breitling reference.

The lifespan of a leather strap depends on the quality of the hide, the tanning process, and daily wear conditions. A handcrafted alligator or vegetable-tanned calf strap, with proper care (avoiding prolonged exposure to water and perspiration, applying leather conditioner periodically), typically lasts 2–4 years with regular use. Casati Milano straps carry an 18-month warranty against manufacturing defects.