Breitling · Transocean

Strap for Transocean Day & Date Red Gold / 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
ReferenceR4531012/G752/732P/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/G752/732P/R20D.1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Transocean R4531012/G752/732P/R20D.1, seen from the bench

The Breitling Transocean is equipped with the Caliber 45 with hour, minute, second, date, and day functions, certified as a chronometer. The model features 22mm lugs and is characterized by the in-house automatic movement. The case integrates a multi-indicator dial and a screw-down crown for water resistance.

Frequently asked questions

What is the lug width of the Breitling Transocean R4531012/G752/732P/R20D.1?

The lug width of the Breitling Transocean R4531012/G752/732P/R20D.1 is 22mm. This measurement is taken between the two lugs at the point where the strap attaches to the case back, using a precision calliper or ruler. Respecting this specification is essential to ensure correct spring bar fitment and optimal strap seating.

What is the best strap for the Breitling Transocean R4531012/G752/732P/R20D.1?

For a 43mm Red Gold case, a Louisiana alligator strap is the most aesthetically coherent choice: the scale texture enhances the warm gold finish and develops an authentic patina over time. Alternatively, a Tuscan vegetable-tanned calf leather strap offers a more understated profile of equal artisanal quality. For sporting or marine use, a high-grade rubber strap maintains the model's technical character.

How do you change the strap on a Breitling Transocean R4531012/G752/732P/R20D.1?

To replace the strap on the Breitling Transocean R4531012/G752/732P/R20D.1, a fine-tipped spring bar tool is required. Insert the tool into the lug hole or between the strap and the case to compress the spring bar, then gently remove the strap to avoid scratching the Red Gold case. It is advisable to work on a soft surface and, if in doubt, to consult a qualified watchmaker.

Are there aftermarket straps compatible with the Breitling Transocean R4531012/G752/732P/R20D.1?

Yes. Any strap with a 22mm attachment width and standard spring bar is technically compatible with the Breitling Transocean R4531012/G752/732P/R20D.1. Milano Straps offers a curated selection of handcrafted 22mm straps in alligator, calf leather, NATO and rubber, available bespoke or ready to ship, with buckles and deployant clasps in various metal finishes.

How long does a leather strap last on a Breitling Transocean R4531012/G752/732P/R20D.1?

The lifespan of a leather strap depends on the quality of the hide, frequency of wear, and care taken. A first-quality alligator or vegetable-tanned calf strap, kept away from water, excessive perspiration, and heat sources, can last between 3 and 7 years while retaining structural integrity and appearance. Milano Straps products are covered by 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