Breitling · Superocean

Strap for Superocean II 36 White / 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 diameter36 mm
ReferenceA17312D21A1A1 (aka: A17312D2/A775/179A)
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 A17312D21A1A1 (aka: A17312D2/A775/179A)

Selected for the 20 mm lug width

All 20 mm straps →

The Superocean A17312D21A1A1 (aka: A17312D2/A775/179A), seen from the bench

The Breitling Superocean A17312D21A1A1 is a 36mm stainless steel sports watch from the Superocean line, designed for professional divers since the 1950s. It features a unidirectional ceramic bezel, high-legibility dial, and water-resistant case with 316L steel construction. The automatic Breitling 17 caliber provides approximately 38 hours of power reserve and COSC chronometer certification. The lug width is 20mm with straight lugs and spring bar attachments, requiring precise fitment for aftermarket straps.

Frequently asked questions

What is the lug width of the Breitling Superocean A17312D21A1A1?

The Breitling Superocean A17312D21A1A1 has a lug width of 20mm. This measurement should be taken internally between the two lugs using a digital calliper, at case level. Any aftermarket strap must respect this tolerance precisely to ensure correct spring bar retention and proper aesthetic alignment.

What is the best strap for the Breitling Superocean A17312D21A1A1?

For the 36mm Superocean A17312D21A1A1, vegetable-tanned calfskin is the most versatile option, developing a natural patina over time and suited to daily wear. For formal occasions, a Hornback alligator leather strap complements the stainless steel case with refined contrast. Technical nylon NATO straps are preferable for water exposure or active use, while vulcanised rubber is the ideal choice for diving.

How do you change the strap on a Breitling Superocean A17312D21A1A1?

Strap replacement on the Superocean A17312D21A1A1 uses standard 1.8mm spring bars. Insert a fine-tipped springbar tool into the lug slot to compress the bar and release the strap. Always work on a soft surface to avoid scratching the case, and ensure replacement spring bars are the correct diameter for this model's lugs.

Are there aftermarket straps compatible with the Breitling Superocean A17312D21A1A1?

Yes. Any strap with a 20mm standard spring bar attachment is technically compatible with the Breitling Superocean A17312D21A1A1. For the best result, straps with a straight or gently tapered end are recommended, as they follow the lug geometry correctly. milanostraps.it offers a curated selection of handcrafted 20mm straps tested for compatibility with this watch family.

How long does a leather strap last on a Breitling Superocean A17312D21A1A1?

The lifespan of a leather strap depends on leather quality, frequency of use, and exposure to moisture and perspiration. A high-quality vegetable-tanned calfskin strap used daily typically lasts 2 to 4 years. First-cut alligator leather can last considerably longer if kept away from water and prolonged UV exposure. Casati Milano straps carry an 18-month warranty against manufacturing defects.

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