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

The lug width of the Breitling Avenger A3239011/C872/435X/A20BA.1 is 22mm. This measurement refers to the internal distance between the two lugs of the case and determines the correct strap width. It is advisable to verify this with a digital calliper on your specific example prior to purchase.

The choice depends on intended use. For operational or sporting contexts, a heavy-duty nylon NATO or a vulcanised rubber strap is most consistent with the model's military DNA. For urban or formal wear, a vegetable-tanned calf leather strap in navy blue or dark brown offers warmth and character, whilst a matte alligator in anthracite elevates the timepiece towards more structured occasions.

Strap replacement requires a spring bar tool — a bifurcated pin tool used to compress the spring bars housed within the lugs. Insert the tool into the spring bar slot, compress and slide the strap free from one side. The operation is fully reversible and requires no advanced watchmaking skills, though it is preferable to have it carried out by a watchmaker to avoid scratching the case.

Yes. Any strap with a 22mm attachment and standard spring bars is compatible with this model. On milanostraps.it, a selection of handcrafted straps made to 22mm lug width specifications is available, in various materials — leather, alligator, NATO, rubber — with stainless steel buckles and deployant clasps proportioned to the 43mm case.

The lifespan of a leather strap depends on hide quality, tanning method and daily use. A quality vegetable-tanned calf strap, with regular use and proper care — kept away from excessive perspiration and water — has an average lifespan of 2–4 years. A shell cordovan strap, owing to the compact fibre structure of the equine leather, can exceed 5 years whilst developing a distinguished patina. Casati Milano's 18-month guarantee covers manufacturing defects.