Strap for Chronomat 44 Stainless Steel / Grey / Rubber

The lug width of the Breitling Chronomat B01 44 reference AB011011/F546/131S is 22mm. This measurement should be taken using a digital calliper positioned between the lugs at their narrowest point. Accurate measurement is essential to ensure a replacement strap fits correctly without forcing or excessive play.

For the steel Chronomat B01 44, vegetable-tanned Italian calfskin offers the most versatile solution, developing a personal patina over time. For formal occasions, a Hornback alligator strap with geometric grain enhances the prestige of the in-house B01 calibre. Those who favour sporting use may prefer vulcanised rubber or ballistic nylon NATO, fully consistent with the tool-watch character of this chronograph.

To replace the strap on the Chronomat B01 44, use a springbar tool (fork-tip screwdriver) to compress the spring bars housed within the lugs. It is advisable to work on a soft surface to avoid scratching the case or bezel. If in doubt, Casati Milano offers a professional strap-changing service by appointment at its Milanese atelier.

Yes, the aftermarket for 22mm straps is extensive. Milano Straps offers a curated selection of handcrafted straps compatible with the Chronomat B01 44, available in calfskin, alligator, rubber and NATO. It is important to check the curvature of the upper strap ends to ensure an optimal fit within the pronounced lugs of this model.

The longevity of a leather strap depends on material quality, care and frequency of use. A quality handcrafted calfskin strap, periodically conditioned with leather cream and kept away from prolonged water exposure, can last between two and four years with daily wear. Alligator straps generally offer greater longevity due to the inherent structure of the hide. Milano Straps provides an 18-month guarantee against manufacturing defects on all Casati Milano straps.