Strap for Navitimer Super 8 B20 Automatic 46 Titanium / Green / NATO

The Breitling AVI EB204010.L535.491X features a 23mm lug width. This is a non-standard measurement within the broader watch market, specific to this 46mm AVI family. When replacing the strap, it is essential to select pieces produced precisely to this width; the internal distance between the lugs should be verified with a digital calliper for accuracy.

For this 46mm titanium tool watch, a vegetable-tanned calf leather strap is the most versatile choice: it develops an authentic patina over time, consistent with the vintage aesthetic of the model. For formal occasions, matte-finished alligator pairs naturally with the brushed titanium case. A ballistic nylon NATO strap remains the most operationally coherent option, directly referencing the AVI's aeronautical heritage.

The strap is replaced using a spring bar tool with a fine tip, inserted into the notch on the side of each lug to compress the spring bar ends. The AVI's titanium case has pronounced lug curvature, so it is advisable to work on a soft cushion to avoid scratching the brushed surface. If you are not confident performing this operation yourself, a watchmaker or the Casati Milano atelier can carry it out in a matter of minutes.

Yes. Aftermarket straps with a 23mm lug width are compatible with the Breitling AVI EB204010.L535.491X, provided they feature curved ends to match the case geometry. Milanostraps.it offers a curated selection of handcrafted 23mm straps in alligator, calf leather, shell cordovan, rubber and NATO, all specifically suited to this reference.

The longevity of a leather strap depends on material quality, frequency of use and maintenance. A high-quality vegetable-tanned calf strap worn daily and treated periodically with a leather conditioner will typically last between 2 and 4 years. Alligator, owing to its dense scale structure and careful tanning, often reaches 4 to 6 years. All Milano Straps products carry an 18-month warranty against manufacturing defects.