Strap for Colt 36 Diamond / Mariner Blue / Sahara

The Breitling Colt A7438953.C913.236X has a lug width of 18mm. This measurement should be taken with a digital calliper placed between the two lugs at the point where the strap meets the case back.

For the 36mm Colt, vegetable-tanned calf leather or alligator in 18mm width offer the most balanced aesthetic result: they respect the case proportions and suit both formal and everyday wear. Shell cordovan is ideal for those seeking a strap that develops character with use.

Strap replacement is carried out via the spring bars housed in the lugs. Using a spring bar tool or a thin forked pin, compress the bars and slide the strap free. Care should be taken to avoid scratching the case surfaces during the operation.

Yes, any standard 18mm strap is compatible with the Breitling Colt A7438953.C913.236X, provided the end-piece geometry suits the lug profile — straight or slightly tapered ends are the most appropriate. Milanostraps.it offers a dedicated selection of handcrafted 18mm straps.

Longevity depends on the material and frequency of use. A vegetable-tanned calf strap typically lasts 2–4 years with daily wear; shell cordovan often exceeds 5 years owing to the material's dense fibre structure. Alligator, if properly maintained with appropriate conditioners, offers comparable longevity. Perspiration, water exposure and heat are the primary degradation factors.