Breitling · Transocean

Strap for Transocean Day & Date Stainless Steel / Black / Rubber / 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/BB69/279S/A20D.2
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/BB69/279S/A20D.2

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Transocean A4531012/BB69/279S/A20D.2, seen from the bench

The Breitling Transocean A4531012/BB69/279S/A20D.2 is a stainless steel chronograph with a 43mm case and black dial, featuring the COSC-certified Breitling Caliber 45 movement with hour, minute, second, date and day displays. The 22mm lug width is precisely calibrated to the case diameter for optimal proportional balance. The watch combines functional design principles from 1950s–60s cockpit chronographs with contemporary formal and casual versatility, while maintaining austere aesthetics free of decorative excess.

Frequently asked questions

What is the lug width of the Breitling Transocean A4531012/BB69/279S/A20D.2?

The Breitling Transocean A4531012/BB69/279S/A20D.2 has a lug width of 22mm. This measurement is taken with a digital calliper between the two lugs at the point where the strap exits the case. When ordering an aftermarket strap, always specify 22mm as the attachment width to ensure correct fitment.

What is the best strap for the Breitling Transocean A4531012/BB69/279S/A20D.2?

For the Transocean, an alligator strap with classic hornback grain or a vegetable-tanned calf leather strap are the most coherent choices for this watch's formal-sport aesthetic. A tapered 22/20mm strap in tobacco brown or cognac leather pairs precisely with the 43mm stainless steel case, preserving correct visual proportions. A brushed steel deployant clasp completes the combination with appropriate instrumental coherence.

How do you change the strap on a Breitling Transocean?

To replace the strap on a Breitling Transocean, a fine-tipped spring bar tool is required. Insert the tip into the lateral notch of the lug, compress the spring bar and slide the strap free. Care should be taken to avoid scratching the steel lugs: it is advisable to protect the case with masking tape during the procedure. The new 22mm strap is fitted by compressing the spring bars and seating them in the lug holes.

Are there aftermarket straps compatible with the Breitling Transocean A4531012/BB69/279S/A20D.2?

Yes. Any strap with a standard 22mm attachment is compatible with the Breitling Transocean A4531012/BB69/279S/A20D.2, provided it uses 22mm spring bars. Milano Straps offers a selection of handcrafted 22mm straps in alligator leather, vegetable-tanned calf and shell cordovan, with buckle or deployant clasp, all compatible with this Breitling reference.

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

The lifespan of a leather strap depends on the material, frequency of use and maintenance. A quality vegetable-tanned calf strap, worn regularly but not intensively, typically lasts 2-4 years, developing a distinctive personal patina over time. Alligator leather, being denser and more abrasion-resistant, can last 5-8 years with correct care (nourishing cream every 3-6 months, natural drying after water exposure). Shell cordovan is the most durable option: its dense fibrous structure resists deformation and can accompany the watch for over a decade.

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