Strap for Chronomat Colt 44 Automatic Blue / Bracelet

The lug width of the Breitling Colt A17388101C1A1 is 22mm, measured between the inner edges of the lugs at case level. This dimension is confirmed by Breitling's official technical documentation for this reference and determines compatibility with aftermarket straps.

The choice depends on intended use. For daily wear and a developing patina, a 22mm vegetable-tanned Tuscan calf strap is the most balanced option. For formal occasions, a Mississippiensis alligator strap with symmetrical scales elevates the Colt's profile. For outdoor or sports use, vulcanised rubber or ballistic nylon NATO straps offer durability and practicality.

The strap is replaced via the spring bar pins housed in the lugs. Using a fine-tipped spring bar tool, compress the ends of the bar and slide the strap free from its seat. The operation takes approximately two minutes per lug and requires no specialist tools. It is advisable to work on a soft surface to protect the caseback and bezel.

Yes. Any strap with a 22mm lug width and standard spring bars is compatible with the Breitling Colt A17388101C1A1. milanostraps.it offers a curated selection of handcrafted leather, rubber and textile straps specifically sized for this lug width, available in standard lengths (75/115mm) or bespoke dimensions.

Longevity depends on material and use. A quality vegetable-tanned calf strap, with routine care — rotation, neutral cream conditioning, drying away from heat sources — retains structural and aesthetic integrity for 2–4 years. Alligator, being denser and less porous, can last considerably longer. Milano Straps products carry an 18-month warranty against manufacturing defects.