Breitling · Transocean

Strap for Transocean Day & Date Stainless Steel / Silver / Croco / Folding

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/G751/740P/A20D.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/G751/740P/A20D.1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Transocean A4531012/G751/740P/A20D.1, seen from the bench

The Breitling Transocean A4531012/G751/740P/A20D.1 is a 43mm stainless steel watch with silver dial and integrated bracelet, featuring the automatic Breitling Calibre 45 movement certified chronometer by COSC. The model combines aviation heritage with refined aesthetics, offering day, date, hours, minutes, and seconds functions. Lug width is 22mm, positioning it within the Transocean family of elegant sports watches.

Frequently asked questions

What is the lug width of the Breitling Transocean A4531012/G751/740P/A20D.1?

The lug width of the Breitling Transocean A4531012/G751/740P/A20D.1 is 22mm. This measurement is taken as the internal distance between the two lugs at the point of contact with the strap, using a millimetre calliper. All 22mm straps are directly compatible with this reference.

What is the best strap for the Breitling Transocean A4531012/G751/740P/A20D.1?

A vegetable-tanned calf leather strap in cognac or honey tones offers the most balanced pairing, complementing the silver dial without competing with the polished steel finishing. For a more formal register, Mississippiensis alligator with a regular grain is the preferred choice. A heavy-weave NATO nylon strap reinstates the Transocean's original aeronautical character.

How do you change the strap on a Breitling Transocean A4531012/G751/740P/A20D.1?

Strap replacement requires a spring bar tool to release the spring bars securing the strap to the lugs. Work on a soft pad to avoid scratching the case. Alternatively, a watchmaker or the Casati Milano atelier can carry out the operation in a matter of minutes during a personal appointment.

Are there aftermarket straps compatible with the Breitling Transocean A4531012/G751/740P/A20D.1?

Yes. Any 22mm strap with straight or slightly curved ends is compatible. Milano Straps offers a curated selection of handcrafted leather, alligator, shell cordovan and technical rubber straps in the 22mm lug width, fitted with a pin buckle or deployant clasp in stainless steel.

How long does a leather strap last on a Breitling Transocean A4531012/G751/740P/A20D.1?

Longevity depends on the material and daily use. A quality vegetable-tanned calf strap, rotated with other straps and kept away from water and excessive perspiration, typically lasts 2 to 4 years. Shell cordovan, owing to the density of its fibre structure, frequently exceeds 5 years, developing a distinctive patina over time. Milano Straps products 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