Strap for Colt Chronograph Automatic Stainless Steel / Mariner Blue / Calf / Pin

The native lug width of the Breitling Colt A1338811/C914/435X/A20BA.1 is 22mm. This measurement should be taken with a digital calliper positioned between the inner surfaces of the lugs, perpendicular to the case's rotational axis. Any aftermarket strap must conform exactly to this dimension to ensure correct and secure fitting.

For the 44mm steel Colt, the most suitable materials are: Hornback alligator for formal contexts (the pronounced grain contrasts effectively with brushed steel), vegetable-tanned calf leather for versatile daily wear, nylon NATO for fidelity to the model's military heritage, and vulcanised rubber for sporting or marine use. Colour pairing depends on the dial: burgundy or navy tones suit blue dials; tobacco brown or dark grey complement black dials.

The strap is replaced using a flat-tip or fork-style spring bar tool. Insert the tool into the lateral groove of the spring bar, compress it inward and slide the strap free from the lug. Repeat on both sides. To fit the new strap, insert one end of the spring bar into the fixed lug first, then compress and engage the opposite side. The operation takes 2–3 minutes and requires no specialist equipment.

Yes. The 22mm lug width is one of the most common in the sport-luxury segment, resulting in a broad aftermarket offering. Milano Straps provides a curated selection of handcrafted 22mm straps — alligator, calf, shell cordovan, NATO and rubber — produced with lengths and tapers calibrated for the Breitling Colt case, ensuring correct geometric fit and optimal wearing comfort.

Longevity depends on the material and maintenance. A quality vegetable-tanned calf strap averages 18–36 months of daily wear when kept away from excessive perspiration and water. Alligator, being denser and more compact, can exceed 3 years with proper care (a conditioning cream applied every 3–4 months). Casati Milano straps carry an 18-month warranty against manufacturing defects.