Breitling · Transocean

Strap for Transocean Chronograph Red Gold / Black / Calf

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
ReferenceRB015212.BB16.433X
FamilyTransocean
MovementBreitling caliber Caliber B01 Hours, Minutes, Small Seconds | Date | Chronograph, Column wheel | 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 RB015212.BB16.433X

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Transocean RB015212.BB16.433X, seen from the bench

The Breitling Transocean features the in-house B01 automatic Caliber with column-wheel chronograph and chronometer certification. The movement provides hour, minute, small second, date and chronograph functions. The watch has 22mm lugs designed for the strap.

Frequently asked questions

What is the lug width of the Breitling Transocean RB015212.BB16.433X?

The lug width of the Breitling Transocean RB015212.BB16.433X is 22mm. This measurement is taken internally between the two lugs using a millimetre calliper, positioned as close as possible to the case carrure of this 43mm red gold chronograph.

What is the best strap for the Breitling Transocean RB015212.BB16.433X?

For a red gold chronograph such as the Breitling Transocean RB015212.BB16.433X, vegetable-tanned alligator leather — particularly in bordeaux or tobacco — offers the most coherent aesthetic pairing. Natural Barenia calfskin provides a softer, less formal alternative, whilst vulcanised rubber suits those who wear the Transocean in more active settings.

How do I change the strap on the Breitling Transocean RB015212.BB16.433X?

The strap on the Breitling Transocean RB015212.BB16.433X is replaced using a dedicated springbar tool or a flat-tipped lever. The two 22mm springbars must be removed carefully to avoid scratching the red gold lugs. It is advisable to use a protective cushion or to have the operation carried out by a qualified watchmaker.

Are there aftermarket straps compatible with the Breitling Transocean RB015212.BB16.433X?

Yes. Any strap with a 22mm attachment is compatible with the Breitling Transocean RB015212.BB16.433X, provided the springbars conform to the standard Breitling diameter of 1.8mm. Milano Straps offers a curated selection of handcrafted 22mm straps in alligator, calfskin, NATO and rubber, available bespoke or ready to ship.

How long does a leather strap last on a Breitling Transocean RB015212.BB16.433X?

Longevity depends on the material and frequency of wear. A quality vegetable-tanned alligator strap, with moderate use and proper maintenance (neutral leather cream, drying away from heat sources), can last between three and five years whilst retaining a distinguished appearance. Barenia calfskin develops a desirable patina but is more susceptible to perspiration and humidity. Milano Straps provides an 18-month guarantee 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