Strap for Chronomat 44 GMT Stainless Steel / Sierra Silver / Bracelet

The lug width of the Breitling Chronomat B01 44 AB042011.G745.375A is 22 mm. This measurement is taken with a calliper across the inner distance between the two lugs, at the point where the strap meets the case. Any strap with a 22 mm attachment is compatible with this reference.

The most suitable materials for the Chronomat B01 44 are alligator leather for formal settings, vegetable-tanned calf leather for everyday use, and vulcanised rubber for sporting or nautical environments. The correct width is 22 mm. A deployant clasp is recommended to distribute pressure evenly and extend strap longevity.

To replace the strap on the Chronomat B01 44, use a fine-tipped springbar tool. Apply gentle pressure to the springbar end to compress the spring and release the strap from the lug. Take care not to scratch the stainless steel case — place the watch face-down on a soft cloth and work under adequate lighting.

Yes. Any strap with a standard 22 mm attachment and springbar is compatible with the Chronomat B01 44. Milano Straps offers handcrafted straps in alligator, vegetable-tanned calf, shell cordovan and rubber, available online in the 22 mm section. Bespoke production with personal leather selection is available through the Casati Milano atelier by appointment.

The lifespan of a leather strap depends on the quality of the tanning, frequency of use and maintenance. A vegetable-tanned calf strap worn daily typically lasts 2–4 years. Alligator leather, owing to its dense scale structure, tends to wear more slowly. Avoiding prolonged exposure to water and perspiration will significantly extend the strap's service life.