Strap for Chronomat B01 42 Stainless Steel - Red Gold / Green / Rubber

The lug width of the Breitling Chronomat B01 42 UB0134131L1S1 is 22 mm, measured internally between the two case lugs. This dimension is consistent on both the upper and lower lugs, making all standard 22 mm straps directly compatible without the need for adapters.

For the bi-material Red Gold and steel case of the Chronomat B01 42, alligator straps in cognac or tobacco tones complement the warm hue of the gold components. Vegetable-tanned calf leather develops a distinguished patina over time, while shell cordovan offers the highest density and long-term resilience. For more active use, vulcanised rubber is the most practical choice.

To replace the strap on a Breitling Chronomat B01 42, use a fine-tipped or forked spring bar tool. Insert the tool into the spring bar slot inside the lug, compress the spring bar ends and slide the strap free. No specialist tools are required, though care should be taken to avoid scratching the lugs or damaging the spring bar. It is advisable to work on a soft, padded surface.

Yes. Any strap with a 22 mm lug width is technically compatible with the Breitling Chronomat B01 42 UB0134131L1S1. Milano Straps offers a curated selection of handcrafted 22 mm straps in alligator, calf leather, shell cordovan and rubber, available with either a traditional buckle or a deployant clasp, all designed to fit the original lugs of this model precisely.

The lifespan of a leather strap depends on material quality, frequency of wear and exposure to perspiration and moisture. A high-quality alligator or shell cordovan strap worn daily under moderate conditions retains its structural and aesthetic integrity for 2 to 4 years. Vegetable-tanned calf develops character over time but is slightly more sensitive to humidity. All Milano Straps products carry an 18-month warranty against manufacturing defects.