Strap for Colt 36 Pearl / Sahara / Folding

The Breitling Colt reference A7438911/A772/256X/A16D.1 has a lug width of 18mm. This measurement refers to the internal distance between the case lugs and determines the correct strap width. It is always advisable to verify with a digital calliper before purchasing a replacement strap.

For the Colt 36mm with an 18mm lug width, straps in vegetable-tanned calf leather or Mississippiensis alligator with a central scale pattern are the most coherent choices for this watch's formal-sport character. Shell cordovan is favoured by collectors for its compact surface and the patina it develops over time. For sport or casual use, a heavy-weave NATO or vulcanised rubber strap offers practicality without compromising aesthetics.

Strap replacement requires a watchmaker's spring bar tool. Insert the flat tip into the notch between the lug and the strap, gently lever to compress the spring bar, and slide the strap free. Care must be taken to avoid scratching the steel lugs. It is recommended to work on a soft surface. The standard spring bar diameter for this model is 1.5mm.

Yes, there are numerous aftermarket straps compatible with an 18mm lug width, including handcrafted pieces produced by Casati Milano for milanostraps.it. It is essential that the strap measures 18mm at the attachment point and that spring bars are included or compatible. Tapered-end straps (e.g. 18/16mm) better suit the case geometry of the Colt 36mm.

The lifespan of a leather strap depends on the material, frequency of use, and care. A well-maintained vegetable-tanned calf strap typically lasts 2 to 3 years with daily wear. Alligator, being denser and more moisture-resistant, can last 4 to 5 years. Shell cordovan is the most durable option. Casati Milano offers an 18-month warranty against manufacturing defects on all its handcrafted straps.