Strap for Chronomat B01 42 NFL Buffalo Bills / Rouleaux

The lug width of the Breitling Chronomat B01 42 AB01342B1C3A1 is 22 mm. This measurement is taken internally between the two lugs using a digital calliper, at the narrowest point just beneath the case. Any aftermarket strap with a 22 mm width will fit correctly into the spring bar slots of this reference.

For the Chronomat B01 42, the most suitable materials are alligator leather (for a sport-elegant register), perforated rally-style calf leather (to echo the aviatory and motorsport heritage) and vulcanised rubber (for intensive or aquatic use). The choice depends on the context: for formal pairings, lacquered alligator is preferred; for daily wear, vegetable-tanned Italian calf leather offers the best balance between aesthetics and longevity.

To replace the strap on the Chronomat B01 42, a fine-tipped or fork-style spring bar tool is required. Insert the tool into the lug slot, compress the spring bar, and slide it out. Care must be taken to avoid scratching the lugs or the steel case back. Casati Milano also offers a strap fitting service by appointment at the Milan atelier.

Yes. All straps with a standard 22 mm attachment are compatible with the Breitling Chronomat B01 42, regardless of manufacturer. Milano Straps offers a curated selection of Italian handcrafted straps in leather, rubber and NATO nylon, specifically tailored to the proportions and aesthetic of the Chronomat, with buckles available in brushed or polished steel finish.

The lifespan of a leather strap depends on the material, care and frequency of use. A vegetable-tanned Italian leather strap, kept away from prolonged water exposure and treated periodically with appropriate creams, typically lasts between 2 and 4 years with regular wear. High-quality alligator straps can exceed 5 years. Milano Straps provides an 18-month warranty against manufacturing defects on all Casati Milano straps.