Breitling · Transocean

Strap for Transocean Day & Date Stainless Steel / Black / Calf / 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/BB69/438X/A20D.1
FamilyTransocean
MovementBreitling caliber 45 hours, minutes, seconds | date, day | chronometer
Year2012

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/BB69/438X/A20D.1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Transocean A4531012/BB69/438X/A20D.1, seen from the bench

The Transocean is equipped with the Breitling 45 caliber, an automatic movement with chronometer certification that displays hours, minutes, seconds, date and day of the week. The watch features 22mm lugs for the strap. The model belongs to the Breitling Transocean collection dedicated to civil aviation.

Frequently asked questions

What is the lug width of the Breitling Transocean A4531012/BB69/438X/A20D.1?

The lug width of the Breitling Transocean A4531012/BB69/438X/A20D.1 is 22 mm. Before purchasing a replacement strap, it is advisable to verify the measurement using a digital calliper placed directly between the lugs of the case, as some variants within the Transocean family feature 20 mm lugs.

What is the best strap for the Breitling Transocean A4531012/BB69/438X/A20D.1?

For the Transocean, a vegetable-tanned calf leather strap in brown or cognac tones is the most coherent choice given the watch's dressy-tool character. For more formal or luxury settings, an alligator belly strap with a steel deployant clasp further enhances the refined sobriety of the dial. For intensive daily use, a heavyweight 22 mm NATO strap offers durability and versatility.

How do you change the strap on a Breitling Transocean A4531012/BB69/438X/A20D.1?

To replace the strap, a fine-tipped springbar tool is required to remove the spring bars securing the strap to the lugs. Insert the tool tip into the slot on the side of the lug, compress the spring bar, and slide the strap free. Care should be taken to avoid scratching the case: rest it on a soft cloth and work gently on both sides.

Are there aftermarket straps compatible with the Breitling Transocean A4531012/BB69/438X/A20D.1?

Yes, all straps with a 22 mm lug width and a standard taper (typically 20 mm at the buckle end) are compatible with the Breitling Transocean A4531012/BB69/438X/A20D.1. Milanostraps.it offers a curated selection of handcrafted straps in Tuscan leather, alligator, NATO, and rubber, available in standard sizes or made to measure, with polished or brushed steel buckles or deployant clasps.

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

The lifespan of a leather strap depends on the quality of the tanning, care and daily use. A high-quality vegetable-tanned calf strap, kept away from prolonged moisture and regularly conditioned with leather cream, can last between 2 and 4 years with daily wear. A premium alligator belly strap, with its denser and more resilient hide, can comfortably reach 4 to 6 years. The Casati Milano guarantee covers manufacturing defects for 18 months.

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