Breitling · Colt

Strap for Colt 44 Automatic Volcano Black / Calf

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter44 mm
ReferenceA1738811.BD44.435X
FamilyColt
MovementBreitling caliber 17 hours, minutes, seconds | date
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 A1738811.BD44.435X

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Colt A1738811.BD44.435X, seen from the bench

The Colt represents Breitling's sporty line with a robust case and Caliber 17 quartz movement. The model offers hour, minute, second and date indication in a three-hand configuration. 22mm lugs complete the case structure.

Frequently asked questions

What is the lug width of the Breitling Colt A1738811.BD44.435X?

The lug width of the Breitling Colt A1738811.BD44.435X is 22mm. This measurement is taken between the case lugs using a digital calliper or a millimetre ruler, and is the essential figure required when selecting a compatible aftermarket strap.

What is the best strap for the Breitling Colt A1738811.BD44.435X?

The ideal choice depends on the intended use. For a sporting and technical register consistent with the Colt's DNA, a vulcanised rubber strap or a ballistic nylon NATO strap are the most appropriate options. For a more refined, tailored look, vegetable-tanned calfskin with a natural grain or matte alligator leather pair particularly well with the 44mm stainless steel case.

How do you change the strap on a Breitling Colt A1738811.BD44.435X?

The strap is replaced using a flat-tip or fork-style spring bar tool, applying gentle lever pressure to the spring bar connecting the strap to the case lugs. It is advisable to work on a soft cloth to avoid scratching the steel case. The existing 22mm spring bars can typically be reused with the new strap.

Are there aftermarket straps compatible with the Breitling Colt A1738811.BD44.435X?

Yes. Any strap with a 22mm lug width is compatible, provided the end curvature matches the geometry of the Colt's lugs. Milano Straps offers a curated selection of handcrafted straps in various materials — calfskin, alligator, rubber and nylon — engineered for precise fit and long-term comfort.

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

The lifespan of a leather strap depends on the quality of the hide, the tanning process and daily wear conditions. A high-grade vegetable-tanned calfskin strap, properly cared for — kept away from moisture and rotated with other straps — can last between three and five years while retaining its structural and aesthetic integrity. Exotic leathers such as alligator, owing to the natural density of the skin, tend to offer greater longevity.

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