Strap for Chronomat B01 42 NFL Denver Broncos / Rouleaux

The lug width of the Breitling Chronomat B01 42 reference AB01342B1O2A1 is 22mm. This measurement should be taken internally between the two lugs using a digital calliper. The strap typically tapers to 20mm at the buckle or deployant clasp.

The most suitable materials for the Chronomat B01 42 are vegetable-tanned Tuscan calf leather — ideal for everyday wear with excellent patina over time — and a padded alligator strap for formal occasions. Vulcanised rubber is recommended for sporting use or humid environments. All straps must have a lug width of 22mm tapering to 20mm.

To replace the strap on the Chronomat B01 42, use a fine-tipped spring bar tool. Insert the tool into the lug hole, compress the spring bar and slide the strap out with a gentle lateral movement. No watchmaker's intervention is required; the operation can be performed independently, taking care not to scratch the stainless steel surfaces.

Yes, the aftermarket offers a wide range of straps compatible with the Chronomat B01 42, all with a 22mm lug width. Milano Straps produces handcrafted straps in Tuscan calf leather, alligator, shell cordovan and rubber, finished to a bespoke sartorial standard. Compatibility is guaranteed by the standard lug measurement, independent of the original Breitling bracelet.

The lifespan of a leather strap depends on the quality of the hide, frequency of use and exposure to perspiration and moisture. A quality vegetable-tanned calf strap, with regular use, typically lasts between 18 and 36 months. High-grade alligator straps can exceed three years with proper care. Milano Straps offers an 18-month guarantee against manufacturing defects.