Strap for Chronomat 41

The lug width of the Breitling Chronomat B01 41 AB0140AAG712378A is 20mm. This measurement should be taken between the inner lugs using a digital calliper placed directly against the steel case for an accurate reading. Any strap with a 20mm attachment is compatible with this reference.

The Chronomat B01 41 suits a variety of interpretations: a polished belly alligator strap enhances the formal character of the stainless steel case, whilst a vegetable-tanned calfskin develops a natural patina over time. For intensive use, vulcanised rubber or ballistic nylon NATO straps provide durability without compromising the instrument-grade character of the B01 movement. A deployant clasp is recommended to distribute wrist pressure evenly and reduce strap wear.

To replace the strap on the Chronomat B01 41, use a 0.8mm spring bar tool. Depress the spring bars at each end of the strap to release them from the case lugs. It is advisable to work on a soft surface to avoid scratching the case or crystal. Alternatively, Casati Milano offers a strap fitting service at the atelier by appointment.

Yes. Any standard 20mm strap is compatible with the Breitling Chronomat B01 41, provided the strap ends are suited to the slightly curved lug profile of this model. Milano Straps offers a curated selection of handcrafted straps in various leathers and materials, with bespoke customisation available through Casati Milano.

The lifespan of a leather strap depends on the material, frequency of use, and exposure to perspiration and the elements. A quality calfskin strap, with proper care, typically lasts 2 to 3 years of daily use. Alligator and shell cordovan, owing to the density of their fibres, can exceed 4 to 5 years. Casati Milano straps are covered by an 18-month warranty against manufacturing defects.