Strap for Colt Quartz Black / Rubber

The lug width of the Breitling Colt A7438010.B783.118S is 20 mm. This measurement refers to the internal distance between the two lugs of the case and determines the correct strap width to fit. Any aftermarket strap must match this specification precisely to ensure a secure fit and correct aesthetics.

The ideal choice depends on context. For sporting or marine use, a vulcanised rubber strap or ballistic nylon NATO are the most functional options. For everyday smart wear, vegetable-tanned smooth calf leather develops an authentic patina over time. For formal occasions, hand-finished alligator leather provides the finest sartorial contrast against the Colt's brushed steel case.

To replace the strap, the spring bars securing it to the case lugs must be removed. A dedicated spring bar tool — a forked pin inserted into the lateral groove of each bar — is used to compress and release it. Care should be taken not to scratch the steel lugs. If unfamiliar with the process, it is advisable to consult a watchmaker or specialist atelier.

Yes. Any strap with a 20 mm lug width and standard spring bars is technically compatible with the Breitling Colt A7438010.B783.118S. MilanoStraps offers a curated selection of 20 mm straps in various materials — leather, alligator, rubber, nylon — all crafted artisanally and fully compatible with this model without adapters.

The lifespan of a leather strap depends on the material, maintenance and intensity of use. A quality vegetable-tanned calf strap, regularly conditioned with natural wax and kept away from prolonged water exposure, can last between three and six years while retaining its structure and appearance. Shell cordovan, due to its dense fibre structure, tends to last even longer. Frequent exposure to perspiration and water accelerates deterioration; in such cases, rotating with a rubber strap is recommended.