Strap for Chronomat 44 GMT Rose Gold / Black / Croco

The lug width of the Breitling Chronomat B01 44 HB0421L3.BC18.743P is 22 mm. This measurement is taken with a digital calliper placed internally between the two lugs, in direct contact with the case, before any tapering of the strap towards the buckle.

For the rose gold case of the Chronomat B01 44, the most appropriate straps are in cognac or tobacco alligator with a glossy grain, which complement the warm tone of the metal, or in shell cordovan for those who prioritise durability and natural patina. Vegetable-tanned calf leather is a sound alternative for more discreet everyday wear.

The strap is replaced using a fine-tipped spring bar tool. Simply compress both ends of the spring bar housed within the lugs, remove the existing strap, and fit the new one, ensuring the spring bar clicks securely into both lug holes. It is advisable to work on a soft pad to protect the rose gold case from scratches.

Yes. Any strap with a lug width of 22 mm and a tail width of 20 mm is compatible with the Chronomat B01 44. Milano Straps offers a selection of handcrafted straps in various materials — alligator, calf, shell cordovan, rubber — made to order or available for immediate despatch, all compatible with this reference.

The lifespan of a leather strap depends on the quality of the hide, frequency of use, and exposure to perspiration and moisture. A high-quality alligator or shell cordovan strap, with routine care, can last between 3 and 5 years. Vegetable-tanned calf straps develop a distinctive patina over time and, if not regularly exposed to water, retain structural integrity for at least 2–3 years of regular wear.