Strap for Avenger II Seawolf Stainless Steel / Volcano Black / Calf / Folding

The lug width of the Breitling Avenger A1733110/BC31/438X/A20DSA.1 is 22mm. This measurement should be taken with a digital calliper positioned at the inner gap between the two lugs at the point where the strap inserts into the case. Always measure at the narrowest point for an accurate reading.

For a 45mm steel case with a military-technical character, the most suitable straps are: Louisiana alligator with flat scale grain in black or tobacco for formal-sport use, vegetable-tanned calf leather for a more natural and lived-in feel, nylon or technical recycled NATO straps for maximum functionality, and vulcanised rubber for intensive or aquatic use. The choice depends on predominant use and desired colour pairing.

To replace the strap on a Breitling Avenger you will need a springbar tool — a forked-tip instrument that compresses the springbars without scratching the case lugs. Insert the tip into the lateral slot of the lug, compress the springbar and slide the strap out. Once the technique is mastered, the operation takes under two minutes per side. If in doubt, it is advisable to consult a watchmaker.

Yes, the aftermarket offers a wide range of straps compatible with the 22mm lug width of the Breitling Avenger. Milano Straps offers Italian handcrafted straps in alligator, calf leather, shell cordovan and technical materials, all made with springbars and lengths calibrated for the 45mm Avenger case. Beyond the lug width, it is essential to verify the buckle width (usually 20mm) and strap segment lengths for a correct fit.

The lifespan of a leather strap depends on the quality of the tanning, daily care and exposure to perspiration and atmospheric agents. A high-grade alligator or vegetable-tanned calf leather strap, with regular maintenance (conditioning cream every 2–3 months, drying after moisture exposure), typically lasts between 2 and 4 years with daily wear. Milano Straps guarantees its straps for 18 months against manufacturing defects.