Strap for Colt Quartz Mariner Blue / Rubber / Pin

The lug width of the Breitling Colt A7438811/C907/145S/A20S.1 is 22mm. This measurement is taken internally between the two lugs at the point where the strap is inserted, and must be matched precisely to ensure correct fitment without mechanical stress on the case.

For the 44mm Colt, an alligator strap in black or anthracite offers the best balance between technical character and formal wearability. Vegetable-tanned calfskin provides immediate comfort and superior breathability for everyday use, whilst a technical nylon NATO is the most coherent choice for outdoor or maritime contexts, in keeping with the model's instrumental vocation.

Strap replacement is carried out using standard 22mm springbars. Using a springbar tool, compress the ends of the spring rod housed in the lug and slide the strap free. Care should be taken to avoid scratching the case: it is advisable to protect the bezel with a soft cloth during the procedure. Fitting the new strap is the reverse process.

Yes, any strap with a 22mm attachment width is technically compatible with the Breitling Colt A7438811/C907/145S/A20S.1, provided it uses standard springbars. Milano Straps offers a selection of handcrafted straps in 22mm, made in alligator, shell cordovan, calfskin and technical materials, all compatible with this reference.

The lifespan of a leather strap depends on the material and conditions of use. A quality calfskin strap with robust stitching typically lasts 2–4 years with daily wear. Shell cordovan, owing to its dense fibre structure, can exceed 5–8 years whilst developing a distinctive patina. Alligator has a comparable longevity when properly maintained. Frequent exposure to water, perspiration and heat significantly shortens leather life: in such conditions, a NATO or rubber strap is the more practical choice.