Strap for Chronomat B01 42 Stainless Steel - Diamond / Grey MOP / Japan

The lug width of the Breitling Chronomat B01 42 AB0134A21G2A1 is 22 mm. This measurement is taken internally between the two lugs using a calliper and indicates the strap width at the point of attachment to the case.

For the Chronomat B01 42, the most suitable straps are vegetable-tanned alligator for an elegant-yet-sporty pairing, smooth matte calf leather for everyday versatility, vulcanised rubber for water-intensive use, and NATO nylon to honour the model's aeronautical heritage. The correct size is 22 mm.

The strap on the Chronomat B01 42 is replaced using a fine-tipped spring bar tool. The model's straight lugs accept standard 22 mm spring bars. The operation takes approximately five minutes and requires no professional equipment, though it is advisable to work on a soft surface to avoid scratching the case.

Yes. Any strap with a 22 mm attachment and standard spring bars is compatible with the Chronomat B01 42 AB0134A21G2A1. Milano Straps offers a curated range of handcrafted straps in various materials — leather, alligator, NATO, rubber — all produced with 22 mm lugs to ensure correct fitment without modification.

The lifespan of a leather strap depends on the material, maintenance and intensity of use. A quality calf leather strap worn daily and kept away from excessive moisture and perspiration typically lasts 18 to 24 months. An alligator strap with vegetable tanning, thanks to the density of its fibres, can exceed three to four years with regular care. Milano Straps guarantees its straps for 18 months against manufacturing defects.