Technical Archive

Breitling
Colt A7338011.C674— lug 20mm

Breitling Colt A7338011.C674: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Chrono Colt Blue / Bracelet

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Breitling A7338011.C674
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

A7338011.C674

Movement

Breitling caliber Caliber B73 Foudroyante Seconds, Minutes, Small Seconds | Date | Chronograph | Chronometer

The Heritage

The Breitling Colt A7338011.C7674 is a chronograph instrument watch belonging to the Colt family, which originated in the 1980s as a military and professional tool. This reference features the Breitling B73 caliber, a COSC-certified chronometer movement equipped with chronograph, small seconds, date, and a distinctive high-frequency flyback seconds function (foudroyante). The stainless steel case measures 41.10 mm in diameter, combining readability and wearability. The 20 mm lug width accepts standard watch straps with flat or slightly curved ends, requiring proper fit verification due to production tolerances of ±0.3–0.5 mm.

FAQ

What is the lug width of the Breitling Colt A7338011.C674?

The lug width of the Breitling Colt A7338011.C674 is 20 mm. This is the nominal specification to use when selecting any compatible strap, whether in leather, NATO fabric or rubber.

What is the best strap for the Breitling Colt A7338011.C674?

The most suitable straps for the Breitling Colt A7338011.C674 are: vegetable-tanned alligator for formal wear, smooth calf leather in cognac or midnight blue for everyday versatility, nylon NATO for a military-inspired look, and vulcanised rubber for aquatic use. A steel deployant clasp is recommended to minimise mechanical stress on the lugs.

How do you change the strap on a Breitling Colt A7338011.C674?

To replace the strap on a Breitling Colt A7338011.C674, use a fine-tipped spring bar tool. Compress the spring bar ends inward whilst the strap end is held clear of the lug. Work on a soft surface to avoid scratching the case. If in doubt, consult a watchmaker or the Casati Milano atelier for a professional strap change.

Are there aftermarket straps compatible with the Breitling Colt A7338011.C674?

Yes, any strap with a 20 mm lug width is technically compatible with the Breitling Colt A7338011.C674. It is important to ensure that the strap ends are flat or only slightly curved, in keeping with the lug geometry of the Colt case. Milanostraps.it offers a curated selection of handcrafted 20 mm straps, available both bespoke and ready to ship.

How long does a leather strap last on a Breitling Colt A7338011.C674?

The lifespan of a leather strap on a Breitling Colt A7338011.C674 depends on the material and care. A good-quality calf leather strap typically lasts 18–24 months with daily wear. Vegetable-tanned alligator, properly maintained with neutral cream and kept away from prolonged moisture, can exceed 3–4 years. Shell cordovan, owing to its dense fibre structure, offers the greatest longevity among traditional leathers. Casati Milano provides an 18-month warranty against manufacturing defects.