Strap for Chronomat B01 42 NFL Los Angeles Rams

The lug width of the Breitling Chronomat B01 42 AB01342B1C9S1 is 22mm. This is the measurement to specify when purchasing any compatible aftermarket strap.

It depends on intended use: a perforated rally calf strap highlights the sporting and aeronautical character of the Chronomat; a vegetable-tanned alligator strap shifts it towards a more formal register; vulcanised rubber is ideal for intensive or humid environments. For versatile everyday use, a ballistic nylon NATO strap remains the most faithful option to the watch's original spirit.

The strap is removed using a flat-tip or fork-type spring bar tool, applying gentle pressure to the spring bar housed within the lug. It is advisable to work on a soft surface to protect the case and to hold the watch face-down. The operation requires no professional tools, though care should be taken to avoid scratching the lugs.

Yes. Any strap with a 22mm attachment width is technically compatible with the Breitling Chronomat B01 42. It is important to ensure that the strap shoulder does not exceed the depth of the original lugs and that the spring bar is of appropriate length (approximately 20–22mm). Milano Straps offers a curated selection of handcrafted 22mm straps specifically suited to this case.

A quality leather strap, with daily wear and proper care, typically lasts between 18 and 36 months. Longevity depends on the quality of the hide, surface treatment, and exposure to perspiration and moisture. Vegetable-tanned straps develop a distinctive patina over time, which enhances their character, though they require greater protection from water compared to synthetic finishes.