Breitling · Avenger

Strap for Avenger II Seawolf Stainless Steel / Volcano Black / Rubber / Pin

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter45 mm
ReferenceA17331101B1S2 (aka: A1733110/BC31/152S/A20SS.1)
FamilyAvenger
MovementBreitling caliber Caliber 17 Hours, Minutes, Seconds | Date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Avenger A17331101B1S2 (aka: A1733110/BC31/152S/A20SS.1)

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Avenger A17331101B1S2 (aka: A1733110/BC31/152S/A20SS.1), seen from the bench

The Breitling Avenger II Seawolf A17331101B1S2 is a 45mm stainless steel professional instrument watch with a unidirectional beaded bezel, screw-down crown, and Breitling Caliber 17 automatic movement (COSC-certified, -4 to +6 seconds daily rate). The 22mm lug width accommodates various strap materials including leather, rubber, and NATO fabric, with anti-reflective sapphire crystal for readability in demanding conditions.

Frequently asked questions

What is the lug width of the Breitling Avenger A17331101B1S2?

The lug width of the Breitling Avenger A17331101B1S2 is 22mm. This measurement must be taken internally between the two case lugs, at the point where the spring bars engage. It is the standard dimension shared across the entire 45mm Avenger family.

What is the best strap for the Breitling Avenger A17331101B1S2?

For the 45mm Breitling Avenger A17331101B1S2, a vegetable-tanned calf leather strap in tobacco or honey tones is recommended for an authentic Pilot Heritage aesthetic. A matte alligator strap in anthracite suits a more formal register. Vulcanised rubber is the preferred choice for sporting or water-related use.

How do I change the strap on the Breitling Avenger A17331101B1S2?

The strap on the Breitling Avenger A17331101B1S2 is replaced by removing the spring bars that secure the strap to the case lugs. A dedicated spring bar tool with a fork tip is required. It is advisable to work on a soft surface to avoid scratching the case, or to entrust the operation to a watchmaker or the Casati Milano atelier.

Are there aftermarket straps compatible with the Breitling Avenger A17331101B1S2?

Yes. Any strap with a 22mm lug width is technically compatible with the Breitling Avenger A17331101B1S2, provided the spring bars have the correct diameter for Breitling lug holes (typically 1.8mm). Milano Straps offers a curated selection of handcrafted 22mm straps in leather, alligator, rubber and NATO, all compatible with this reference.

How long does a leather strap last on a Breitling Avenger A17331101B1S2?

The lifespan of a leather strap depends on leather quality, care and usage habits. A high-quality vegetable-tanned calf strap, properly maintained with appropriate conditioners and stored correctly, typically lasts between 2 and 4 years of daily wear. Regular exposure to water or perspiration significantly shortens its service life; in such contexts, a rubber or NATO strap is strongly recommended.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only