Strap for Navitimer B01 Chronograph 43 Stainless Steel / Silver / Bracelet

The lug width of the Breitling Navitimer AB0138241G1A1 is 22mm. This measurement refers to the internal distance between the two lugs of the case and is the critical dimension for selecting any compatible aftermarket strap, including buckle and keeper.

The optimal choice depends on the intended context. For formal wear, a 22mm alligator or vegetable-tanned calf leather strap enhances the dial's aesthetic. For sport or active use, a ballistic nylon NATO or vulcanised rubber strap offers reliability and comfort. Shell cordovan in cognac or midnight blue calf leather are the most coherent chromatic pairings with the Navitimer's aviation heritage.

Replacing the strap on the Navitimer requires a Y-shaped or flat-blade spring bar tool to release the spring bars from the 22mm lugs. Work on a soft surface to protect the case and crystal. If a deployant clasp is fitted, it is advisable to have the work carried out by a watchmaker or specialist atelier to avoid scratching the steel surfaces.

Yes, the 22mm format is well served by the artisan aftermarket. Milanostraps.it offers a curated selection of 22mm straps in various materials — alligator, calf, shell cordovan, rubber, NATO — handcrafted in Italy and fully compatible with the Navitimer's lugs. A deployant clasp is available separately to replicate the original fitment feel.

Longevity depends on the material and frequency of use. A quality vegetable-tanned calf strap worn daily will remain structurally sound for 2–4 years, developing a characteristic patina over time. Shell cordovan, due to the dense fibre structure of the horse's subcutaneous layer, can exceed 5 years. Alligator has a comparable lifespan if kept away from prolonged exposure to water or perspiration. Casati Milano straps carry an 18-month warranty against manufacturing defects.