Strap for Chronomat B01 42 Triumph

The lug width of the Breitling Chronomat B01 42 TB0134101M1X1 is 22 mm. This measurement applies across the entire Chronomat 42 family and can be verified using a vernier calliper placed between the two case lugs. All aftermarket straps with a standard 22/20 mm taper are fully compatible with this reference.

For the Chronomat B01 42 in titanium and red gold, an alligator strap in honey or cognac tones paired with a red gold deployant clasp best complements the two-tone case combination. Alternatively, a vegetable-tanned calf leather strap develops a natural patina over time, offering refined everyday elegance. For sporting use, vulcanised rubber with a fine grain texture maintains water resistance and long-term comfort.

Changing the strap on the Chronomat B01 42 requires a spring bar tool or a fine-tipped lug-width screwdriver. The 22 mm spring bars are released by applying gentle pressure to the notch at the side of each lug. It is advisable to work on a soft surface to avoid scratching the titanium case. If in doubt, the procedure can be carried out at the Casati Milano atelier by appointment.

Yes. The Chronomat B01 42 features standard 22 mm lugs with removable spring bars, making it fully compatible with the entire range of 22 mm aftermarket straps. Milano Straps offers options in alligator, calf leather, shell cordovan, NATO fabric, and rubber, all crafted with a 22/20 mm taper. The lug curvature is slight and does not require specially shaped straps.

The lifespan of a leather strap depends on the quality of the hide, frequency of use, and exposure to perspiration and moisture. An artisan-crafted alligator or vegetable-tanned calf strap, with regular care — drying away from heat sources and occasional treatment with neutral wax — can last between three and six years while retaining structural integrity. Milano Straps straps carry an 18-month warranty against manufacturing defects.