Breitling · Colt

Strap for Colt Lady Diamond / Volcano Black / 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
ReferenceA7738853/BD46/175A
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 A7738853/BD46/175A

Selected for the 16 mm lug width

All 16 mm straps →

The Colt A7738853/BD46/175A, seen from the bench

The Colt represents Breitling's sporty line with a robust case and quartz caliber 77 movement. The model offers hour, minute, second and date functions with chronometer certification. The configuration includes 16mm lugs for the strap.

Frequently asked questions

What is the lug width of the Breitling Colt A7738853/BD46/175A?

The Breitling Colt A7738853/BD46/175A features a lug width of 16 mm. This is a non-standard size compared to more common Colt references, so it is essential to verify this measurement with a calliper before purchasing an aftermarket strap. The distance should be measured internally between the two lugs at the point where they meet the case.

What is the best strap for the Breitling Colt A7738853/BD46/175A?

For the Breitling Colt A7738853/BD46/175A, the most consistent choice with the watch's instrumental character is a vegetable-tanned calf leather strap with a military finish, which develops a natural patina over time. Alternatively, a symmetrical belly alligator strap elevates the Colt towards formal settings, while a technical nylon NATO strap recalls its aeronautical heritage for intensive daily wear.

How do you change the strap on a Breitling Colt A7738853/BD46/175A?

To replace the strap on the Breitling Colt A7738853/BD46/175A, a flat-tipped or lever-style spring bar tool is required. The 16 mm spring bars must be compressed laterally to release them from the lug holes. It is advisable to work on a soft surface to avoid scratching the case, and to ensure that the replacement spring bars are compatible with the diameter of the original holes.

Are there aftermarket straps compatible with the Breitling Colt A7738853/BD46/175A?

Yes, there are aftermarket straps compatible with the Breitling Colt A7738853/BD46/175A. The key parameter is the 16 mm lug width. Milano Straps offers a dedicated selection of 16 mm straps in various materials — leather, alligator, NATO and rubber — handcrafted and adaptable to the lug geometry of the Colt.

How long does a leather strap last on a Breitling Colt A7738853/BD46/175A?

The lifespan of a leather strap depends on the quality of the tanning process, the leather thickness and frequency of use. A quality artisan vegetable-tanned strap on a Breitling Colt A7738853/BD46/175A can last between 2 and 5 years with ordinary care — avoiding prolonged exposure to water and excessive perspiration. Casati Milano straps include an 18-month warranty 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