Strap for Colt Quartz Volcano Black / Calf / Pin

The lug width of the Breitling Colt A7438811/BD45/437X/A20BA.1 is 22mm. This measurement refers to the internal distance between the two lugs of the case, where the strap is fitted. Respecting this dimension is essential to ensure a correct and secure attachment.

The choice depends on the intended use. For everyday professional wear, a NATO nylon strap is the most coherent option given the Colt's vocational character. For more formal occasions, a vegetable-tanned calfskin or alligator belly strap elevates the combination without compromising the watch's technical nature. For sport or aquatic activities, vulcanised rubber is the most practical solution.

The strap is removed using a fine-tip spring bar tool, inserted into the small notch on the side of the spring bar. By compressing the bar on both sides simultaneously, it releases from the lugs. Care should be taken to avoid scratching the stainless steel case: it is advisable to protect the lugs with masking tape before proceeding.

Yes, any strap with a 22mm attachment width is technically compatible. Milano Straps offers an extensive selection of Italian handcrafted straps in this size, available in calfskin, alligator, shell cordovan, NATO nylon and rubber. The standard buckle is 20mm, whilst for a deployant clasp a width of 18 or 20mm is recommended depending on the chosen model.

The lifespan of a leather strap depends on the quality of the hide, frequency of use, and exposure to perspiration and moisture. A high-quality vegetable-tanned calfskin strap has an average lifespan of 2 to 4 years with daily wear. Shell cordovan, owing to its dense fibrous structure, can last 8 to 10 years. To maximise longevity, it is advisable to rotate straps regularly and apply a neutral leather conditioner every 3 to 4 months.