Strap for Montbrillant 01 Stainless Steel / Mercury Silver / Calf

The Breitling Montbrillant AB013012.G709.428X has a lug width of 20 mm. This measurement is taken with a digital calliper between the two lower lugs at their narrowest point, and is the exact dimension required when ordering a compatible replacement strap.

For the Montbrillant, a vegetable-tanned alligator or premium calf leather strap best complements the chronograph's instrument-grade character. For more active or daily use, a nylon NATO or vulcanised rubber strap is functionally coherent with the model's aeronautical heritage without compromising its aesthetic.

Strap replacement requires a springbar tool to release the spring bars connecting the strap to the 20 mm lugs. Work on a soft surface to avoid scratching the stainless steel case. Alternatively, a watchmaker or the Casati Milano atelier can perform the swap in a matter of minutes during an appointment.

Yes. Any strap with a standard 20 mm attachment is compatible with the Breitling Montbrillant AB013012.G709.428X. Milano Straps offers a curated selection of handcrafted leather, alligator, rubber and NATO straps in 20 mm, with customisable finishes and stitching options.

The lifespan of a leather strap depends on the quality of the tanning process, frequency of wear, and exposure to moisture and perspiration. A high-grade vegetable-tanned alligator or calf strap, used carefully and rotated with other straps, retains its structural and aesthetic integrity for 3 to 5 years. Casati Milano straps carry an 18-month guarantee against manufacturing defects.