Breitling · Colt

Strap for Colt Chronograph Stratus Silver / Calf / Pin

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
ReferenceA73388111G1X1 (aka: A7338811/G790/433X/A20BA.1)
FamilyColt
MovementBreitling caliber Caliber B73 Foudroyante Seconds, Minutes, Small Seconds | Date | Chronograph | 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 A73388111G1X1 (aka: A7338811/G790/433X/A20BA.1)

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Colt A73388111G1X1 (aka: A7338811/G790/433X/A20BA.1), seen from the bench

The Breitling Colt Chronograph A73388111G1X1 is a 44mm stainless steel chronograph featuring the high-precision Breitling B73 caliber with COSC chronometer certification. This instrumental watch includes a foudroyante complication for fractional second measurement, along with chronograph, small seconds, minutes, and date functions. The 22mm lug width accommodates standard straight-end straps without requiring curved ends, making it compatible with a wide selection of aftermarket leather straps.

Frequently asked questions

What is the lug width of the Breitling Colt A73388111G1X1?

The lug width of the Breitling Colt A73388111G1X1 is 22mm. This measurement is taken between the two lugs at the base of the case using a digital calliper. This is a model-specific measurement and cannot be substituted with adjacent sizes without compromising the aesthetic and functional integrity of the strap attachment.

What is the best strap for the Breitling Colt A73388111G1X1?

For the Breitling Colt A73388111G1X1, vegetable-tanned Tuscan calf leather is the most versatile choice: supple, durable, and capable of developing a distinctive patina over time. For formal contexts, alligator belly leather with its symmetrical, three-dimensional grain provides exceptional refinement. Technical NATO straps and vulcanised rubber are ideal for sporting use or humid environments.

How do you change the strap on a Breitling Colt A73388111G1X1?

The strap on the Breitling Colt A73388111G1X1 is removed using a spring bar tool, carefully levering out the spring bars that connect the strap to the case lugs. The lugs are straight and accept standard 22mm spring bars. The procedure can be carried out independently with the appropriate tools or entrusted to a watchmaker or to the Casati Milano atelier.

Are there aftermarket straps compatible with the Breitling Colt A73388111G1X1?

Yes, the Breitling Colt A73388111G1X1 features standard straight 22mm lugs that accept any aftermarket strap in that size with a straight cut end. Curved ends are not required. Milano Straps offers a curated selection of compatible 22mm straps in leather, alligator, NATO and rubber, handcrafted and available online or bespoke at the Casati Milano atelier.

How long does a leather strap last on a Breitling Colt A73388111G1X1?

The lifespan of a leather strap depends on the type of leather, care routine, and frequency of use. A quality vegetable-tanned calf leather strap, with regular use and proper maintenance — avoiding prolonged moisture exposure and periodically applying a neutral leather conditioner — typically lasts between 2 and 4 years. Alligator straps, owing to the natural structure of the skin, tend to offer greater longevity. Milano Straps provides an 18-month guarantee 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