Strap for Navitimer B01 Chronograph 46 Red Gold / Green / Bracelet

The Breitling Navitimer RB0137241L1R1 features a lug width of 24mm. This is a specific dimension associated with the larger 46mm Navitimer case and is not a standard size found across all watch straps. When purchasing a replacement strap, it is essential to verify this measurement using a calliper positioned between the two lugs of the case.

For a Red Gold case of 46mm, vegetable-tanned alligator straps in bordeaux, cognac or dark brown offer the most harmonious aesthetic pairing. Shell cordovan develops a patina that complements the warm tones of red gold over time. For a more sport-oriented, aviation-authentic look, a technical nylon NATO strap in navy or charcoal grey is a functionally consistent choice.

Strap replacement requires a spring bar tool — either lever-type or fork-type — inserted into the small hole on each lug. Compressing the ends of the spring bar releases the strap from the case. With a Red Gold case, it is strongly advisable to use a tool with plastic or nylon-tipped ends to avoid scratching the polished surfaces. If in doubt, entrust the operation to a watchmaker or to the Casati Milano atelier.

Yes. Aftermarket 24mm straps compatible with the Navitimer RB0137241L1R1 are available both online at milanostraps.it and as fully bespoke pieces through the Casati Milano atelier. It is important that the chosen strap features slightly tapered or curved ends to fit the characteristic curved lugs of the Navitimer correctly, and that the total length suits the wearer's wrist circumference.

The lifespan of a leather strap depends on the quality of the hide, frequency of use, and exposure to perspiration and moisture. A high-quality vegetable-tanned alligator strap, worn regularly but not daily, can last between three and five years while retaining its structural and aesthetic integrity. Rotating between two or more straps and storing them away from direct heat sources significantly extends their useful life. Casati Milano guarantees its straps for 18 months against manufacturing defects.