Strap for Colt 36 Pearl / Rubber

The Breitling Colt A7438911/A772/237S/A16S.1 has a lug width of 18mm. This measurement refers to the internal distance between the two lugs of the case and determines the correct strap width. To verify it on your own piece, use a digital calliper positioned inside the lugs as close to the case as possible.

Given the Colt's tool watch character, the most coherent choices are vegetable-tanned calf leather (for those seeking a natural patina over time), a heavy-weave NATO nylon strap (for a historically accurate military aesthetic) and vulcanised rubber (for sport or water use). Shell cordovan is the most refined option for those wishing to elevate the formal register of the watch whilst retaining durability. The correct width is 18mm.

Strap replacement is carried out via the spring bars housed within the case lugs. Using a fine-tipped springbar tool, compress the ends of the spring bar to release the strap from the lugs. The operation does not require professional tools, but care should be taken to avoid scratching the stainless steel case. The replacement spring bar must be compatible in diameter with the Colt's lugs.

Yes. The Breitling Colt features a standard 18mm lug width, broadly supported by the aftermarket. MilanoStraps offers a curated selection of handcrafted leather, rubber and nylon straps in compatible widths, produced with selected materials and available with bespoke finishing options. Straps can be chosen online or personalised at the Casati Milano atelier by appointment.

The lifespan of a leather strap depends on the material, maintenance and intensity of use. A quality vegetable-tanned calf strap, regularly treated with leather cream and kept away from prolonged moisture and perspiration, can last between two and five years. Shell cordovan, owing to its dense fibrous structure, tends to last considerably longer. Casati Milano straps carry an 18-month warranty against manufacturing defects.