Strap for Chronomat 44 Blacksteel / Yellow / Rubber

The lug width of the Breitling Chronomat B01 44 MB0111C3.I531.262S is 22mm, measured internally between the two lugs at the base of the case. This is the correct dimension to specify when ordering a compatible aftermarket strap.

For the Chronomat B01 44, the most suitable materials are: padded alligator leather with vegetable tanning for formal-professional use, grain calf leather in matte finish for an everyday urban register, technical nylon NATO for sport or outdoor use, and vulcanised rubber for marine environments. A butterfly deployant clasp in brushed steel is the recommended fastening with leather straps for stability and comfort.

The strap on the Chronomat B01 44 is removed using a springbar tool inserted into the spring bar slot between the case and the lug. Compress the spring bar laterally until it releases. Care should be taken to avoid scratching the lugs: it is advisable to protect the case with masking tape before proceeding. Reassembly is performed in reverse, ensuring the spring bar is fully engaged on both sides.

Yes. Any strap with a 22mm lug width is technically compatible with the Breitling Chronomat B01 44 MB0111C3.I531.262S. Milano Straps offers handcrafted straps in leather, alligator, calf and NATO, with finished ends tailored to fit the Breitling case lugs correctly without play or friction.

The lifespan of a leather strap depends on the material, frequency of use and care. A vegetable-tanned alligator strap worn 3–4 days per week and kept away from water and prolonged perspiration can last 3 to 5 years while retaining good structural integrity. Shell cordovan is among the most durable materials in terms of flex resistance. Milano Straps offers an 18-month warranty against manufacturing defects on all Casati Milano straps.