Strap for Avenger II GMT Stainless Steel / Mariner Blue / Calf / Pin

The lug width of the Breitling Avenger A3239011/C872/105X/A20BA.1 is 22mm. This measurement is taken internally between the two lugs at the narrowest point of the spring bar hole, and is the essential parameter for selecting a compatible aftermarket strap.

The ideal choice depends on the intended use. For sport or daily wear, a high-tenacity nylon NATO strap or vulcanised rubber strap offers the best functional performance. For more formal occasions, a hand-stitched alligator strap with a brushed steel deployant clasp complements the case without compromising its instrumental character.

The strap is removed using a flat-tip springbar tool inserted into the lug hole to compress the spring bar. The Avenger's lugs are slightly tapered towards the tips, so care should be taken to avoid scratching the stainless steel case. The operation can be completed in a few minutes with the correct tools.

Yes. Any strap with a 22mm lug width is compatible with this reference. Milano Straps offers a curated selection of handcrafted straps — in leather, alligator, nylon NATO and rubber — specifically verified for compatibility with the Avenger family. The recommended standard length is 115/75mm for a medium wrist.

Longevity depends on leather quality and conditions of use. A vegetable-tanned calfskin strap worn daily with proper care typically lasts between two and four years. Frequent exposure to water, perspiration or UV rays accelerates degradation. Alligator straps, owing to the natural follicle structure, tend to be more durable and develop a distinctive patina over time.