Strap for Colt Quartz Mariner Blue / Rubber / Pin

The lug width of the Breitling Colt A7438811/C907/158S/A20S.1 is 22mm, measured internally between the two lugs at the point where the strap meets the case. This is the correct reference measurement for selecting any compatible aftermarket strap.

For the Breitling Colt A7438811/C907/158S/A20S.1, a vegetable-tanned calf leather strap is the most coherent choice given the model's technical character. Alternatively, a premium NATO in ballistic nylon honours the original military identity, whilst hornback alligator elevates the tone for more formal settings.

To replace the strap, remove the 22mm spring bars using a dedicated spring bar tool with a curved blade. Work on a soft surface to prevent scratches to the case and lugs. If in doubt, any watchmaker can complete the operation within minutes.

Yes. Any strap with a 22mm attachment is compatible with the Breitling Colt A7438811/C907/158S/A20S.1, provided standard spring bars are included or already fitted. Milano Straps offers a dedicated selection of handcrafted 22mm straps in leather, NATO and rubber.

Longevity depends on leather quality and daily use. A well-maintained vegetable-tanned calf strap typically lasts between 2 and 4 years with daily wear. High-grade alligator can exceed 5 years. Prolonged exposure to perspiration, water and direct sunlight should be avoided to preserve the grain structure and slow deterioration.