Strap for Chronomat B01 42 NFL New Orleans Saints

The lug width of the Breitling Chronomat B01 42 AB01342B1B4S1 is 22mm. This measurement is taken with a calliper between the two lugs at their narrowest point, flush against the case. It is a standard size well served by the artisan strap market and compatible with a wide range of leather, rubber and fabric straps.

For the Chronomat B01 42, the most suitable materials are alligator with square scale or hornback grain for formal settings, vegetable-tanned calfskin for everyday wear that develops a natural patina over time, and vulcanised rubber for sporting use. A brushed steel deployant clasp is preferable to a standard buckle as it distributes pressure more evenly and extends the lifespan of the strap.

The strap on the Chronomat B01 42 is replaced by removing the 1.8mm spring bars fitted in the lugs. A dedicated spring bar tool is required: insert the tip into the side hole of the lug, compress the spring bar and slide the strap free. The process is fully reversible without specialist tools and does not require a watchmaker, provided care is taken to avoid scratching the steel lugs.

Yes, the aftermarket offers a broad selection of 22mm straps compatible with the Chronomat B01 42. Milano Straps produces handcrafted straps in alligator, calfskin, shell cordovan and rubber, available bespoke or in standard sizing. For a 42mm case, a strap length of 115/75mm or 120/80mm is recommended depending on wrist circumference.

The lifespan of a leather strap depends on the tanning method, hide thickness and daily use. A quality vegetable-tanned calfskin strap, maintained properly and kept away from prolonged exposure to water and perspiration, can last between three and five years while developing a distinctive patina. Alligator with proper tanning and high-quality finishes offers greater longevity. Using a deployant clasp significantly reduces repetitive folding and extends the strap's service life.