Strap for Colt 36 Pearl Diamond / Rubber / Pin

The lug width of the Breitling Colt A7438911/A771/238S/A16S.1 is 18mm. This measurement refers to the internal distance between the two lugs at the point where the strap attaches to the case, and should be verified with a millimetre calliper directly on the watch case.

For the Breitling Colt 36mm, the most suitable materials are vegetable-tanned alligator leather for formal use, waxed calfskin for everyday wear, and NATO nylon straps for maximum durability. The keeper and buckle should be in brushed or polished steel to match the original case finish.

The strap is replaced using a flat-tip or fork-type spring bar tool. The original Breitling spring bars have a diameter of approximately 1.5mm and a standard length for 18mm lugs. Compress the spring bar on one side, slide the strap out, then insert the new one using the same procedure. Place the caseback on a soft cloth to avoid scratches.

Yes, all straps with a standard 18mm fitting are compatible with the Breitling Colt A7438911/A771/238S/A16S.1. Milano Straps offers a dedicated selection of 18mm straps in various materials and finishes, including bespoke handcrafted options from the Casati Milano atelier.

The lifespan of a leather strap depends on the material and care. A quality vegetable-tanned alligator strap, with regular alternated use, typically lasts between 3 and 5 years. Shell cordovan, owing to its greater density, can exceed 5 years. It is advisable to avoid prolonged exposure to water and perspiration and to apply a neutral leather conditioner periodically.