Breitling · Transocean

Strap for Transocean Day & Date Stainless Steel / Silver / 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 diameter43 mm
ReferenceA4531012/G751/280S/A20S.1
FamilyTransocean
MovementBreitling caliber 45 hours, minutes, seconds | date, day | chronometer
Year2012
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 Transocean A4531012/G751/280S/A20S.1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Transocean A4531012/G751/280S/A20S.1, seen from the bench

The Breitling Transocean ref. A4531012/G751/280S/A20S.1 is a 43mm stainless steel watch inspired by 1950s-60s long-haul aviation. It features a silver dial with three counters, applied indices, and a twelve-notch bezel. The watch is powered by the Caliber 45, a COSC-certified chronometer movement with day, date, and central seconds. The 22mm lug width is dimensionally calculated to maintain visual balance on the wrist, requiring a curved attachment strap.

Frequently asked questions

What is the lug width of the Breitling Transocean A4531012/G751/280S/A20S.1?

The Breitling Transocean A4531012/G751/280S/A20S.1 features a 22mm lug width. This measurement is taken with a digital calliper placed inside the lugs, flush against the case. Any 22mm strap with a standard spring bar, either straight or curved end, will be compatible with this reference.

What is the best strap for the Breitling Transocean A4531012/G751/280S/A20S.1?

Given the silvered dial and formal character of the Transocean, alligator hornback leather or vegetable-tanned Italian calf represent the most coherent choices. A brushed steel pin buckle maintains metallic continuity with the stainless steel case. For frequent travellers, a butterfly deployant clasp in 22mm distributes wrist pressure evenly and extends strap life considerably.

How do I change the strap on a Breitling Transocean A4531012/G751/280S/A20S.1?

Use a fine-tipped spring bar tool, inserting it into the spring bar slot inside the lug. Compress the spring bar inward, slide the strap free, and fit the new strap with the spring bar pre-compressed. The Transocean's lugs have a moderate curve: ensure the replacement strap has compatible end geometry for a flush fit against the case.

Are there aftermarket straps compatible with the Breitling Transocean A4531012/G751/280S/A20S.1?

Yes. Any strap with a 22mm lug width and standard spring bar specification is compatible. Milano Straps offers a curated selection of handcrafted leather, NATO, and technical material straps sized precisely for 22mm, with curved-end options available for an accurate fit against the Transocean's case.

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

Longevity depends on the material and maintenance regime. A quality vegetable-tanned calf strap, conditioned every three to four months and kept away from prolonged moisture and perspiration, typically lasts two to four years. Alligator leather, owing to the structural resilience of its scales, tolerates surface humidity better and can last five years or more with regular care. Milano Straps provides an 18-month guarantee 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