Strap for Montbrillant 01 Stainless Steel / Mercury Silver / Croco

The lug width of the Breitling Montbrillant AB013012.G735.728P is 20mm. This measurement should be taken internally between the two lugs using a calliper, at the point where the strap makes contact with the case, to ensure a precise fit without lateral play.

For the Montbrillant, vegetable-tanned alligator straps with a Mat grain are the most coherent choice given the watch's instrument-oriented identity. Shell cordovan suits those who appreciate a natural patina developing over time. For active use, vulcanised rubber or heavy-weave NATO straps provide functionality without disrupting the proportions of the 40mm case.

The strap is removed using a spring bar tool — a bifurcated-tip instrument — which compresses the spring bars housed within the lugs. With standard 20mm lugs, the operation is manageable for anyone familiar with basic watchmaking tools. Rest the case on a soft surface to avoid scratching the bezel or caseback during the process.

Yes. Any strap with a straight 20mm end is compatible with the Montbrillant AB013012.G735.728P. Milano Straps offers a curated selection of handcrafted leather, rubber, and textile straps specifically chosen for 20mm lug width, with bespoke customisation available through the Casati Milano atelier.

Longevity depends on the material and frequency of wear. A high-quality vegetable-tanned alligator strap, with regular care — neutral leather conditioner and rotation between multiple straps — maintains its structural and aesthetic integrity for 3 to 5 years of daily use. Shell cordovan, owing to its dense fibre structure, tends to last even longer, developing patina rather than deteriorating.