Strap for Colt Quartz Blue / Rubber

The lug width of the Breitling Colt A7438010.C675.119S is 20 mm. This measurement is the key reference when selecting any aftermarket strap, whether in leather, rubber, or NATO nylon.

It depends on the intended use. For formal or semi-formal occasions, a 20 mm vegetable-tanned alligator strap offers the best balance between quality and aesthetic coherence with the steel case. For daily sports use, grained calf leather or vulcanised rubber are more suitable. A NATO strap remains the most faithful choice to the Colt's original military vocation.

The strap is replaced using a spring bar tool to release the spring bars from the lugs. The Colt case features straight lugs with standard through-holes — a routine operation that can be performed at home with the correct tools, or by a watchmaker or specialist atelier such as Casati Milano.

Yes. Any 20 mm strap with standard spring bars is dimensionally compatible. It is advisable to check the strap's underside curvature to ensure a proper fit against the lugs. Milanostraps.it offers a selection of straps vetted for compatibility with this reference.

Longevity depends on leather quality and usage patterns. A high-grade alligator or calf strap with vegetable tanning, maintained with a leather conditioner every two to three months and not worn continuously, can last between three and six years whilst retaining good structural integrity. Prolonged exposure to water and perspiration accelerates deterioration; rubber or nylon straps are recommended for intensive use.