Strap for Navitimer 8 B01 Chronograph 43 Stainless Steel Prototype

The Breitling AVI AB011713 features a 23mm lug width. This is a non-standard measurement in the watch industry, derived from the geometry of the 43mm case. To verify it, it is advisable to measure with a digital calliper the internal distance between the lugs, in contact with the metal walls where the springbar is inserted.

Given the aeronautical character and 43mm steel case of the Breitling AVI AB011713, the ideal strap depends on the context of use. For formal-sport wear, alligator in matte Mississippiensis grain or vegetable-tanned calf leather are the most coherent choices. For outdoor contexts, a 23mm ballistic nylon NATO strap or a vulcanised rubber strap provide the necessary resistance and grip.

To replace the strap on the Breitling AVI AB011713, the springbars securing the original strap to the lugs must be removed. Use a fine-tipped springbar tool, inserting the tip into the lateral slot of the lug to compress the springbar and release the strap. Care should be taken to avoid scratching the case: if in doubt, it is advisable to consult a watchmaker or the Casati Milano service.

Yes, there are aftermarket straps compatible with the Breitling AVI AB011713, provided they have a lug width of 23mm. Milano Straps offers a selection of artisan straps in this size, crafted in alligator, vegetable-tanned calf leather, shell cordovan, and technical materials. It is also important to verify the strap length (standard 75/115mm or bespoke) and the buckle type compatible with the case.

The lifespan of a leather strap for the Breitling AVI AB011713 depends on the quality of the leather and the frequency of use. A high-quality vegetable-tanned calf leather strap lasts on average 2 to 4 years with daily wear, developing a distinctive patina over time. Shell cordovan, owing to its dense equine fibre structure, can exceed 5 years. First-quality alligator straps, with proper care, offer a comparable lifespan. Avoiding prolonged exposure to water and perspiration significantly extends the strap's life.