Breitling · Colt

Strap for Colt Oceane Black / Calf

Takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width16 mm
Case diameter33 mm
ReferenceA7738011.B785.408X
FamilyColt
MovementBreitling caliber Caliber 77 Hours, Minutes, Seconds | Date | Chronometer
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 Colt A7738011.B785.408X

Selected for the 16 mm lug width

All 16 mm straps →

The Colt A7738011.B785.408X, seen from the bench

The Colt represents Breitling's sports line, equipped with the 77 caliber that provides hours, minutes, seconds and date with chronometer certification. The A7738011.B785.408X reference features 16mm lugs for the strap. The movement guarantees chronometric precision according to COSC standards.

Frequently asked questions

What is the lug width of the Breitling Colt A7738011.B785.408X?

The lug width of the Breitling Colt A7738011.B785.408X is 16mm. This measurement is taken with a calliper placed perpendicularly between the two lugs at the point where the strap attaches to the case. It is a specific technical dimension that determines compatibility with aftermarket straps.

What is the best strap for the Breitling Colt A7738011.B785.408X?

For the 33.20mm case of the Breitling Colt, the most suitable straps are tapered alligator leather in vegetable-tanned finish (tapering from 16mm to 14mm), which balance the compact diameter without overwhelming the wrist. Shell cordovan and smooth calf leather are equally refined alternatives for a professional setting. For sport use, ballistic nylon NATO straps or vulcanised rubber offer the best functionality.

How do you change the strap on a Breitling Colt A7738011.B785.408X?

To replace the strap on the Breitling Colt A7738011.B785.408X, you will need a spring bar tool or a very thin flat-blade screwdriver. Insert the tool into the lug hole, compress the spring bar and slide it free from the lug. The process takes approximately 2-3 minutes per side and requires no specialist tools, though working on a soft surface is advisable to avoid scratching the case.

Are there aftermarket straps compatible with the Breitling Colt A7738011.B785.408X?

Yes. The Breitling Colt A7738011.B785.408X features a standard 16mm lug width, for which a wide selection of handcrafted aftermarket straps is available. Milanostraps.it offers a dedicated range of 16mm straps in selected leathers with artisan finishing. Compatibility is determined solely by the lug width, not by the original Breitling strap specification.

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

The lifespan of a leather strap depends on the type of leather, frequency of wear and maintenance routine. A quality vegetable-tanned alligator strap, worn in rotation with other straps and kept away from prolonged moisture and direct perspiration, typically lasts 3-5 years whilst retaining a dignified patina. Shell cordovan and waxed calf leather tend to outlast other leathers due to their denser fibre structure. Applying a leather conditioner every 2-3 months significantly extends strap life.

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