Breitling · Transocean

Strap for Transocean Day & Date Red Gold / Silver / 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
ReferenceR4531012/G752/438X/R20D.1
FamilyTransocean
MovementBreitling caliber Caliber 45 Hours, Minutes, Seconds | Date, Day | Chronometer
CaseRed Gold

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 R4531012/G752/438X/R20D.1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Transocean R4531012/G752/438X/R20D.1, seen from the bench

The Breitling Transocean R4531012/G752/438X/R20D.1 features a 43mm red gold case with a day-date display powered by the certified COSC Caliber 45 movement. The 22mm lug width accommodates compatible straps, and the dress-sport profile includes slightly curved lugs for wrist comfort. This timepiece combines technical precision with refined aesthetics, delivering hours, minutes, seconds, date, and day functions.

Frequently asked questions

What is the lug width of the Breitling Transocean R4531012/G752/438X/R20D.1?

The lug width of the Breitling Transocean R4531012/G752/438X/R20D.1 is 22mm. This measurement should be taken using a digital calliper on the inner side of the lug, between the two case walls, to ensure precise compatibility with any aftermarket strap.

What is the best strap for the Breitling Transocean in Red Gold?

For a 43mm Red Gold case with a dress-sport character, the ideal strap is a polished alligator in bordeaux, cognac or black. Alternatively, vegetable-tanned calf leather with a matte finish and shell cordovan are materials that complement the warmth of red gold without overpowering it. A steel or gold PVD deployant clasp completes the look with added practicality.

How do I change the strap on the Breitling Transocean R4531012/G752/438X/R20D.1?

Strap replacement is carried out using a spring bar tool: insert the tip into the lateral slot of the spring bar at the lug, compress the bar and slide the strap free. Care should be taken to avoid scratching the red gold lugs — placing a soft cloth beneath the case during the procedure is advisable. The replacement 22mm strap is fitted by reversing the steps.

Are there aftermarket straps compatible with the Breitling Transocean 22mm?

Yes. Any strap with a standard 22mm attachment is technically compatible with the Breitling Transocean R4531012/G752/438X/R20D.1. MilanoStraps offers a curated selection of handcrafted straps in leather, alligator, shell cordovan and other materials, made to measure or ready to purchase, specifically proportioned for 43mm cases.

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

The lifespan of a leather strap depends on the quality of the tanning, the thickness and daily usage. A high-grade alligator or well-maintained shell cordovan strap can last between 3 and 6 years with regular wear. Vegetable-tanned calf leather typically lasts 2 to 4 years. Frequent exposure to water, perspiration and UV light is the primary cause of deterioration: rotating between several straps significantly extends the life of each one.

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