Strap for Chronomat 44 Stainless Steel / Blackeye Blue / Calf

The lug width of the Breitling Chronomat B01 44 AB011012.C789.105X is 22mm. This measurement is taken between the two lugs at the point where the strap attaches to the case and is the key parameter for selecting a compatible strap.

The ideal strap depends on the intended use: a Louisiana alligator strap enhances the formal character of the chronograph, whilst a NATO nylon or vulcanised rubber strap complements its sporting DNA. For smart-casual settings, a vegetable-tanned calfskin strap offers a balanced and long-lasting solution.

Strap replacement requires a spring bar tool or angled screwdriver to remove the 22mm spring bars. It is advisable to use a professional kit with a nylon-tipped tool to avoid scratching the steel lugs. On the original Rouleaux bracelet, the procedure differs as it involves removing the bracelet links.

Yes, any standard 22mm strap is compatible with this reference. Milano Straps offers a curated selection of 22mm straps in various materials and finishes, including bespoke options handcrafted by the Casati Milano atelier. It is important to ensure that the overall length and end-piece geometry suit the Chronomat's lug profile.

Longevity depends on material and care: a well-maintained vegetable-tanned calfskin strap typically lasts 2–3 years with daily use. A high-grade alligator strap, kept away from regular water exposure and heavy perspiration, can exceed 4–5 years. Casati Milano provides an 18-month warranty against manufacturing defects on all handcrafted straps.