Breitling · Superocean

Strap for Superocean II 42 Stainless Steel / Volcano Black / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter42 mm
ReferenceA17365C91B1A1 (aka: A17365C9.BD67.161A)
FamilySuperocean
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

The Superocean A17365C91B1A1 (aka: A17365C9.BD67.161A), seen from the bench

The Breitling Superocean A17365C91B1A1 is a 42mm stainless steel tool watch with water resistance to 300 metres, featuring a unidirectional steel bezel with black ceramic insert and black dial with luminous indices. It houses the Breitling Caliber 17 automatic movement—derived from ETA 2824-2—providing hours, minutes, seconds and date. The lug width is 20mm, a standard size in the sport-professional segment offering wide aftermarket strap compatibility. The case combines alternating brushed and polished surfaces for dynamic light management without excess.

Frequently asked questions

What is the lug width of the Breitling Superocean A17365C91B1A1?

The lug width of the Breitling Superocean A17365C91B1A1 is 20mm. This measurement refers to the internal distance between the two lugs of the case, best taken with a calliper as close to the case as possible. It is a standard dimension in the professional sports segment, compatible with a wide range of aftermarket straps.

What is the best strap for the Breitling Superocean A17365C91B1A1?

The choice depends on intended use and personal style. For a sport-elegant pairing, a vegetable-tanned alligator strap in midnight blue or dark brown complements the satin-finished steel case. For aquatic or sporting environments, vulcanised rubber with a micro-perforated texture best suits the model's technical nature. A ballistic nylon NATO strap offers maximum everyday versatility.

How do you change the strap on a Breitling Superocean A17365C91B1A1?

The strap on the Breitling Superocean A17365C91B1A1 is secured by standard 20mm spring bars. To replace it, insert a fine-tipped spring bar tool into the lug slot, compress the spring, and slide the strap free. No case disassembly is required. The operation can be carried out carefully by the owner or by a watchmaker.

Are there aftermarket straps compatible with the Breitling Superocean A17365C91B1A1?

Yes. Any strap with a 20mm fitting and standard spring bars is compatible with the Breitling Superocean A17365C91B1A1. Milanostraps.it offers handcrafted leather, rubber and textile straps specifically selected for this lug width, with bespoke options available through the Casati Milano atelier.

How long does a leather strap last on a Breitling Superocean A17365C91B1A1?

The lifespan of a leather strap depends on the material, maintenance and exposure to moisture. On a sport-oriented model such as this Superocean, a quality shell cordovan or vegetable-tanned alligator strap, used with care and kept away from prolonged water contact, can last between 3 and 5 years while retaining structural integrity. For aquatic use, rubber or NATO is the recommended alternative.

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