Strap for Colt 36 Pearl Diamond / Sahara / Pin

The lug width of the Breitling Colt A7438911/A771/239X/A16BA.1 is 18mm. This measurement should be verified using a digital calliper to gauge the inner distance between the two case lugs, ensuring a precise fit without lateral play.

The Colt 36 suits a range of materials: vegetable-tanned alligator enhances its formal character, smooth or grained calf leather offers everyday versatility, and nylon NATO straps stay true to the watch's aeronautical heritage. For sport or water use, an 18mm vulcanised rubber strap makes the most of the calibre B74's 200-metre water resistance.

Strap replacement requires a spring bar tool inserted into the lug notch to release the spring bars. Work on a soft surface to avoid scratching the satin-brushed steel case. The procedure takes roughly 2–3 minutes; alternatively, any watchmaker or authorised retailer can carry it out swiftly at no extra charge.

Yes. The standard 18mm lug width of the Colt 36 is compatible with a wide range of aftermarket handcrafted straps. It is important that the strap has straight (non-tapered) ends to fit correctly into the Breitling case lugs. Milanostraps.it offers a curated selection of 18mm leather, rubber and NATO straps specifically suited to this model.

The lifespan of a leather strap depends on the tanning method, material and conditions of use. A quality vegetable-tanned alligator strap worn daily but kept away from excessive perspiration and water will typically last 2–4 years, developing a personal patina over time. Vegetable-tanned calf leather offers a similar lifespan but lower abrasion resistance. For sport or aquatic use, a rubber strap is recommended for superior durability in humid conditions.