Breitling · Colt

Strap for Colt Lady Pearl / Calf / Pin

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
ReferenceA7738811/A770/406X/A14BA.1
FamilyColt
MovementBreitling caliber 77 hours, minutes, seconds | date | chronometer
Year2014
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 A7738811/A770/406X/A14BA.1

Selected for the 16 mm lug width

All 16 mm straps →

The Colt A7738811/A770/406X/A14BA.1, seen from the bench

The Breitling Colt A7738811/A770/406X/A14BA.1 is a 33mm stainless steel watch featuring the Breitling 77 caliber, COSC certified for precision between -4 and +6 seconds daily. This Colt Lady Pearl model offers essential functions: hours, minutes, seconds, and date. The 16mm lug width is a non-standard specification requiring precise compatibility. Designed for slender wrists, it combines balanced proportions with satin and polished steel finishes, maintaining the instrument-watch philosophy in a compact, discreet format suitable for daily professional use.

Frequently asked questions

What is the lug width of the Breitling Colt A7738811/A770/406X/A14BA.1?

The lug width of the Breitling Colt A7738811/A770/406X/A14BA.1 is 16mm. This is a non-standard measurement: it is advisable to verify it using a digital calliper placed inside the case lugs, at the strap attachment point.

What is the best strap for the Breitling Colt 33mm?

For the stainless steel Colt 33mm, the most suitable options are vegetable-tanned calf leather for daily wear, alligator for formal occasions, and NATO or rubber for sports use. The 16mm lug width requires a specific selection of compatible straps.

How do you change the strap on the Breitling Colt A7738811/A770/406X/A14BA.1?

To replace the strap, a thin-headed springbar tool is required. Insert it between the lug and the case to compress the spring bars. It is advisable to work on a soft surface to avoid scratching the stainless steel case. The operation takes approximately two minutes for anyone familiar with basic watchmaking tools.

Are there aftermarket straps compatible with the Breitling Colt 33mm?

Yes, there are numerous aftermarket straps compatible with the 16mm lug width of the Breitling Colt 33mm. Milano Straps offers a dedicated selection of handcrafted straps in various materials, all produced with lugs cut to size to ensure correct fit without any adaptation.

How long does a leather strap last on a Breitling Colt 33mm?

The lifespan of a leather strap depends on the material and care routine. A quality vegetable-tanned calf strap, with periodic conditioning and protection from moisture, typically lasts 2 to 4 years of daily wear. Shell cordovan and alligator, owing to their denser fibre structure, can last considerably longer.

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