Strap for Chronomat Evolution Stainless Steel / Yellow Gold - Diamond / MOP

The Breitling Chronomat Evolution C1335611/A647 has a lug width of 20 mm. This measurement is taken internally between the two lugs on the caseback side, using a calliper or a millimetre gauge. All standard 20 mm straps are compatible with this reference.

For the two-tone steel and yellow gold case with a mother-of-pearl dial, the most suitable options are alligator in cognac or dark brown — which complement the gold details — or shell cordovan in black or burgundy for a formal register. Vegetable-tanned calfskin with a smooth finish is a versatile alternative that develops an attractive patina over time. For daily or sports use, vulcanised rubber is a functional choice consistent with the model's aeronautical DNA.

Strap replacement requires a spring bar tool to remove the spring bars securing the strap to the case lugs. It is advisable to work on a soft surface to prevent scratching the case or bezel. If in doubt, entrust the operation to a watchmaker or the Casati Milano atelier, which also offers a fitting service.

Yes. The standard 20 mm lug width ensures full compatibility with quality aftermarket straps available on the market. Milanostraps.it offers a selection of handcrafted 20 mm straps — in alligator, calfskin, shell cordovan and rubber — made to Haute Horlogerie standards, with a buckle or deployant clasp in steel or two-tone finish.

The lifespan of a leather strap depends on the quality of the hide, frequency of use and exposure to perspiration and water. A quality alligator or shell cordovan strap, with regular but not continuous wear, retains its structural and aesthetic integrity for 3 to 5 years. Vegetable-tanned leather develops an appealing patina over time. Prolonged immersion should be avoided, and a neutral leather conditioner should be applied periodically.