Breitling · Colt

Strap for Colt Oceane Blue / Bracelet

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.C677.813A
FamilyColt
MovementBreitling caliber 77 hours, minutes, seconds | date | chronometer
Year2006 - 2011
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.C677.813A

Selected for the 16 mm lug width

All 16 mm straps →

The Colt A7738011.C677.813A, seen from the bench

The Breitling Colt A7738011.C677.813A is a 33.20mm stainless steel watch from the Colt family, designed for daily wear with certified chronometer performance. It features the Breitling Caliber 77, an automatic mechanical movement with COSC certification guaranteeing ±4 seconds per day accuracy, displaying hours, minutes, seconds and date. The watch has a 16mm lug width and satined/polished steel case with applied indices and luminescent hands, combining military-aeronautic aesthetics with practical proportions suitable for both professional and formal contexts.

Frequently asked questions

What is the lug width of the Breitling Colt A7738011.C677.813A?

The Breitling Colt A7738011.C677.813A has a lug width of 16mm. This measurement is critical when selecting a compatible strap: any aftermarket or bespoke strap must measure exactly 16mm at the buckle end to fit correctly between the lugs without forcing or lateral play.

What is the best strap for the Breitling Colt A7738011.C677.813A?

The ideal strap depends on the intended use. Vegetable-tanned calfskin is the most versatile option, developing a personal patina over time. Louisiana alligator elevates the formal character of the watch. For sport or marine use, vulcanised rubber provides waterproofing and thermal comfort. A butterfly deployant clasp in 316L steel complements any leather strap and improves wrist security.

How do you change the strap on a Breitling Colt A7738011.C677.813A?

The strap is replaced using the standard spring bar system integrated into the lugs. Using a bifurcated springbar tool, compress the bars laterally and slide out the strap. No specialist tools or watchmaker intervention are required. It is advisable to work on a soft surface to protect the case and crystal from scratches.

Are there aftermarket straps compatible with the Breitling Colt A7738011.C677.813A?

Yes. Any strap with a 16mm lug width is technically compatible with the Colt A7738011.C677.813A. Milano Straps offers a curated selection of handcrafted 16mm straps in various materials — calfskin, alligator, shell cordovan, NATO and rubber — finished to complement Breitling's original hardware. Casati Milano also offers fully bespoke options with in-atelier leather selection.

How long does a leather strap last on a Breitling Colt A7738011.C677.813A?

Strap longevity depends on material, care and frequency of use. A quality vegetable-tanned calfskin strap, regularly conditioned with leather cream and rotated with other straps, will typically last 3–5 years. Alligator, due to its denser hide structure, can exceed 5 years. Prolonged exposure to water and perspiration accelerates deterioration; for daily sport use, alternating with a rubber or NATO strap is strongly recommended.

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