Strap for Montbrillant 01 Stainless Steel / Mercury Silver / Calf

The lug width of the Breitling Montbrillant AB013012.G735.425X is 20mm. This measurement should be taken with a digital calliper inside the lugs at their narrowest point to ensure a precise fit without lateral gaps.

The most suitable strap for the Montbrillant is a bombé alligator in vegetable-tanned leather, which complements the bezel texture and develops a distinctive patina over time. Shell cordovan offers maximum durability, whilst vulcanised rubber is preferable for sporting use or humid environments.

The strap is replaced using a spring bar tool to remove the 20mm spring bars housed in the case lugs. Care should be taken to avoid scratching the stainless steel case: rest the watch on a soft cushion and work with controlled movements. It is advisable to have the operation carried out by a watchmaker or specialist atelier.

Yes. Any 20mm strap with pre-curved ends is compatible with the Montbrillant. Handcrafted straps produced by ateliers such as Casati Milano respect the geometry of Breitling lugs and are available in various materials — alligator, calfskin, shell cordovan and rubber — with bespoke finishes.

Longevity depends on the material and maintenance. A quality vegetable-tanned alligator strap, regularly treated with nourishing cream and kept away from excessive moisture, typically lasts 3–5 years. Shell cordovan frequently exceeds 5–7 years thanks to its compact fibre structure. Vulcanised rubber straps are virtually unaffected by perspiration and moisture, lasting over 4–6 years with regular use.