Breitling · Transocean

Strap for Transocean Day & Date Stainless Steel / Silver / Croco / 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/G751/743P/A20BA.1
FamilyTransocean
MovementBreitling caliber Caliber 45 Hours, Minutes, Seconds | Date, Day | Chronometer
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/G751/743P/A20BA.1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Transocean A4531012/G751/743P/A20BA.1, seen from the bench

The Breitling Transocean A4531012/G751/743P/A20BA.1 is a stainless steel dress watch with a 43mm case housing the Breitling Caliber 45, a COSC-certified chronometer movement. The watch features hours, minutes, seconds, date, and day-of-week functions on a legible dial with applied indices. The 22mm lug width accommodates compatible straps designed for this specification, requiring measurement of the internal distance between lugs to ensure proper fit and functionality.

Frequently asked questions

What is the lug width of the Breitling Transocean A4531012/G751/743P/A20BA.1?

The lug width of the Breitling Transocean A4531012/G751/743P/A20BA.1 is 22mm. This measurement corresponds to the internal distance between the case lugs, taken at the strap attachment point using a calliper. The strap typically tapers to 18mm or 20mm at the buckle end, depending on the selected strap.

What is the best strap for the Breitling Transocean A4531012/G751/743P/A20BA.1?

For the Transocean A4531012/G751/743P/A20BA.1, alligator leather with hornback or Louisiana grain is the most appropriate choice given the model's dress-sport character. Vegetable-tanned Tuscan calf leather is an excellent alternative for those seeking a strap that develops a personal patina over time. For less formal settings, nylon NATO or vulcanised rubber straps offer durability and versatility.

How do you change the strap on the Breitling Transocean A4531012/G751/743P/A20BA.1?

The strap is replaced using a fine-tipped springbar tool, inserted into the lug hole to compress the springbar ends. Care must be taken to avoid scratching the stainless steel case: placing a soft cloth between the tool and the case is strongly recommended. Remove the springbar, slide in the new strap, and reinsert the springbar until it clicks securely into place.

Are there aftermarket straps compatible with the Breitling Transocean A4531012/G751/743P/A20BA.1?

Yes, any strap with a 22mm lug width and standard springbars is compatible with the Breitling Transocean A4531012/G751/743P/A20BA.1. Milano Straps offers a curated selection of handcrafted straps in leather, alligator, vegetable-tanned calf, NATO, and rubber, specifically designed for this lug width, with finishes and materials chosen to complement the model's aesthetic.

How long does a leather strap last on a Breitling Transocean A4531012/G751/743P/A20BA.1?

The lifespan of a leather strap depends on the quality of the hide, exposure to perspiration and moisture, and maintenance routine. A quality vegetable-tanned calf strap worn daily and treated periodically with neutral wax will typically last between 18 and 36 months. Alligator leather, owing to the resilience of its scale structure, is more resistant to surface wear and can exceed three years with proper care. Milano Straps provides an 18-month guarantee against manufacturing defects on all straps.

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