Strap for Colt Quartz Silver / Calf

The lug width of the Breitling Colt A7438010.G598.428X is 20 mm. This measurement is taken with a calliper between the two lugs at the point where the strap attaches, perpendicular to the case axis. A strap with a 20 mm attachment fits flush within the original Breitling lugs without lateral play.

For the Breitling Colt A7438010.G598.428X, the most suitable materials are alligator leather for formal contexts, shell cordovan for those who value patina and long-term durability, and vegetable-tanned calf leather for intensive daily use. Ballistic nylon NATO straps are ideal for sporting use, in keeping with the aviation heritage of the Colt family. The attachment width must be 20 mm.

To replace the strap on the Breitling Colt A7438010.G598.428X, a spring bar tool or a 1 mm flat-head precision screwdriver is required. Insert the tool into the spring bar slot, compress it and slide the strap free from the lug. Care should be taken to avoid scratching the satin-finished case surfaces. The new 20 mm strap is fitted by engaging the spring bar into the lug holes.

Yes, all straps with a 20 mm attachment and standard length (115/75 mm or 120/80 mm) are compatible with the Breitling Colt A7438010.G598.428X. It is important to verify that the strap end profile is straight or slightly tapered to fit the curvature of the Breitling lugs. Casati Milano and milanostraps.it offer handcrafted straps selected for this specific compatibility.

The lifespan of a leather strap depends on leather quality, frequency of wear and exposure to perspiration and water. A quality vegetable-tanned calf strap lasts on average 2 to 4 years with daily use. Shell cordovan, owing to its dense fibre structure, can exceed 5 years. Conditioning with neutral wax every 3 to 4 months and rotating between straps significantly extends the life of the leather.