Breitling · Transocean

Strap for Transocean Chronograph Stainless Steel / Panda / Calf / Pin

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
ReferenceAB015212/G724/437X/A20BA.1
FamilyTransocean
MovementBreitling caliber B01 hours, minutes, small seconds | date | Chronograph, column wheel | chronometer
Year2011
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 AB015212/G724/437X/A20BA.1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Transocean AB015212/G724/437X/A20BA.1, seen from the bench

The Breitling Transocean AB015212/G724/437X/A20BA.1 features a 43 mm stainless steel case and houses the Breitling B01 manufacture chronograph movement with column wheel, offering approximately 70 hours of power reserve and COSC certification. This model belongs to the Transocean collection, inspired by 1950s aviation chronographs, and features a symmetric subdial layout with integrated date and tachymeter bezel. The 22 mm lug width accommodates compatible aftermarket straps with straight-ended termination.

Frequently asked questions

What is the lug width of the Breitling Transocean AB015212/G724/437X/A20BA.1?

The lug width of the Breitling Transocean AB015212/G724/437X/A20BA.1 is 22 mm. This measurement can be verified directly between the lugs using a digital calliper and determines compatibility with any aftermarket strap. Milano Straps 22 mm straps are manufactured to a ±0.1 mm tolerance to ensure a precise fit without lateral play.

What is the best strap for the Breitling Transocean AB015212/G724/437X/A20BA.1?

For the Breitling Transocean, a belly-cut alligator strap with vegetable tanning in tobacco or cognac tones is the most coherent choice given the watch's historical and instrumental identity. Alternatively, black box-calf leather or a two-layer woven nylon NATO strap emphasise its original aviator vocation. The ideal choice depends on context: formal, everyday, or sporty wear.

How do you change the strap on the Breitling Transocean AB015212/G724/437X/A20BA.1?

Strap replacement on the Transocean is carried out using a spring bar tool or a 1.5 mm flat-blade screwdriver. The spring bars are compressed laterally at their ends, releasing the strap from the lugs. The procedure requires no work on the bezel or caseback and can be performed without specialist watchmaking skills, provided care is taken not to scratch the case surfaces.

Are there aftermarket straps compatible with the Breitling Transocean AB015212/G724/437X/A20BA.1?

Yes. Any strap with a 22 mm lug width and a straight flat end taper is compatible with the Breitling Transocean AB015212/G724/437X/A20BA.1. Milano Straps produces handcrafted straps in various leathers and materials specifically for this size, available in the dedicated 22 mm strap collection. No Breitling-specific adapters or accessories are required.

How long does a leather strap last on a Breitling Transocean AB015212/G724/437X/A20BA.1?

The lifespan of a leather strap depends on hide quality, frequency of use, and exposure to perspiration and moisture. A high-grade vegetable-tanned alligator or calf strap, worn regularly and kept away from water, will retain its structural and aesthetic integrity for 3 to 5 years. Milano Straps products carry 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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only