Breitling · Superocean

Strap for Superocean II 42 Stainless Steel / Volcano Black / Rubber / Pin

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
ReferenceA17365C91B1S1
FamilySuperocean
MovementBreitling caliber 17 hours, minutes, seconds | date
Year2015 - 2019
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 Superocean A17365C91B1S1

Selected for the 20 mm lug width

All 20 mm straps →

The Superocean A17365C91B1S1, seen from the bench

The Breitling Superocean 42 (ref. A17365C91B1S1) continues a tradition dating back to 1957, featuring a 42mm stainless steel case with screw-down crown, unidirectional bezel, and anti-reflective sapphire crystal. The black dial offers excellent readability with luminescent indices. Powered by the Breitling Caliber 17 automatic movement (derived from ETA 2824-2) with approximately 38 hours power reserve, it includes hours, minutes, central seconds, and date at 3 o'clock. Water-resistant to 300 meters for professional diving, it accepts 20mm straps with straight or tapered ends.

Frequently asked questions

What is the lug width of the Breitling Superocean A17365C91B1S1?

The Breitling Superocean A17365C91B1S1 has a lug width of 20mm. This measurement is taken internally between the two lugs using a millimetre calliper, and is compatible with the full range of standard 20mm straps available at milanostraps.it.

What is the best strap for the Breitling Superocean 42mm?

It depends on the intended use. For formal occasions, a square-grain alligator belly strap in navy blue or dark grey is the most refined choice. For everyday or sporting use, vegetable-tanned calfskin or vulcanised rubber provide durability while maintaining aesthetic coherence with the model's marine character. A technical NATO strap is ideal for water-related activities.

How do you change the strap on a Breitling Superocean?

Strap replacement requires a spring bar tool — either a forked or pointed type — to release the spring bars securing the strap to the lugs. Work on a soft surface to avoid scratching the case. If you are unfamiliar with the process, it is advisable to entrust the job to a watchmaker or a specialist atelier such as Casati Milano.

Are there aftermarket straps compatible with the Breitling Superocean A17365C91B1S1?

Yes. Any strap with a straight 20mm attachment end is compatible with the Breitling Superocean A17365C91B1S1. milanostraps.it offers a curated selection of handcrafted leather, rubber and textile straps made specifically for this width, with bespoke customisation available through the Casati Milano atelier.

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

Longevity depends on the material and conditions of use. A quality alligator or shell cordovan strap, properly cared for and kept away from salt water and heavy perspiration, can last between three and five years. Vegetable-tanned calfskin, being more porous, typically lasts one to three years. For frequent marine use, a rubber or technical NATO strap is recommended, as neither is affected by moisture.

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