Strap for Navitimer B02 Chronograph 41 Cosmonaute Stainless Steel - Platinum / Black / Bracelet

The Breitling Navitimer PB02301A1B1A1 has a lug width of 22 mm, which is the standard measurement for this 41 mm case variant. The strap typically tapers to 20 mm at the buckle end, following the classic tapered profile. Before purchasing a replacement strap, it is advisable to verify the measurement using a digital calliper between the two lugs.

For a platinum and stainless steel case with a technical-aviatory character, matte alligator leather — in black, midnight blue or cognac — offers the most authoritative pairing. Vegetable-tanned Tuscan calf leather is the preferred choice for those who appreciate a genuine patina developing over time. For sport or travel contexts, a technical nylon NATO strap or a vulcanised rubber strap provide comfort and grip without compromising aesthetic coherence.

The strap on the Navitimer PB02301A1B1A1 is secured by spring bars connecting it to the case lugs. Using a spring bar tool, compress the spring bar inward to release it from the lug hole and slide the strap free. The operation does not require opening the case and can be performed by the owner with care, taking precautions not to scratch the platinum lug surfaces.

Yes. Any strap with a 22 mm attachment width is compatible with the Breitling Navitimer PB02301A1B1A1, provided the spring bars are of the correct diameter for the case lugs (typically 1.5 mm in diameter, 20 mm in length). Milanostraps.it offers a curated selection of Italian-crafted 22 mm straps in various materials and finishes, all compatible with this reference.

The lifespan of a leather strap depends primarily on the quality of the hide and the conditions of use. A high-quality alligator or vegetable-tanned calf strap, worn daily and properly maintained — avoiding prolonged exposure to perspiration, water and direct sunlight — can last between 2 and 5 years whilst retaining its shape and texture. Casati Milano straps carry an 18-month guarantee against manufacturing defects.