Strap for Montbillant 38 Stainless Steel / White / Japan Special Edition

The lug width of the Breitling Montbrillant A4137012/G789/223A is 20 mm. This measurement is taken with a digital calliper positioned between the two lugs, parallel to the case, at the innermost point of the attachment. All compatible straps must have a 20 mm end to ensure a correct fit without lateral play.

For the Montbrillant, an alligator strap with vegetable-tanned leather offers the most balanced combination of formal character and longevity. As an alternative, Tuscan calf leather with contrast stitching complements the mixed finishes of the stainless steel case. For sport or daily intensive use, a technical nylon NATO or a rubber strap in 20 mm provides durability without compromising legibility.

Strap replacement requires a lever-type or double-ended springbar tool. Insert the tool into the springbar slot — the spring-loaded pin connecting the strap to the lug — compress the pin and slide the strap end out of the lug. Repeat on the opposite side. For the Montbrillant's 20 mm inner lug opening, springbars with a 1.8 mm diameter and 20 mm length are recommended.

Yes. Any strap with a 20 mm attachment end is compatible with the Breitling Montbrillant A4137012/G789/223A. Milano Straps offers a range of handcrafted 20 mm straps in various materials and finishes, designed to fit the geometry of Breitling lugs. It is important to confirm that the strap has a straight (non-curved) end, consistent with the lug profile of the Montbrillant.

The lifespan of a leather strap depends on the material, usage and maintenance. A quality alligator strap, properly stored and rotated with other straps, can last between 3 and 6 years. Vegetable-tanned calf leather develops a patina with wear but is more susceptible to moisture: it is advisable to avoid wearing it in conditions of intense perspiration. Periodic application of a leather conditioner will significantly extend the strap's service life.