Strap for Montbrillant 01 Red Gold / Aurora Blue / Calf

The lug width of the Breitling Montbrillant RB013012.C896.431X is 20mm. It is advisable to verify the actual measurement with a digital calliper between the lugs on the case back before ordering an aftermarket strap, as casting tolerances in 18k red gold may vary slightly from the nominal figure.

For the Montbrillant in red gold, an alligator strap in vegetable-tanned leather in tobacco, cognac, or bordeaux tones is technically the most coherent choice. The three-dimensional grain of alligator leather complements the warm tones of 18k red gold. Shell cordovan and wax-pull smooth calf are excellent alternatives for everyday wear.

To replace the strap on the Montbrillant, a springbar tool with a fine tip is required. Insert the tool into the lug hole or between the strap and case to compress the spring bar. On a red gold case it is essential to use a tool with a nylon-tipped or protected end to avoid scratching the metal. For the first replacement, consulting a watchmaker or specialist atelier is strongly recommended.

Yes, all standard 20mm straps are compatible with the Breitling Montbrillant RB013012.C896.431X. MilanoStraps offers a curated selection of handcrafted 20mm straps in various materials — alligator, calf, shell cordovan, NATO and rubber — designed to complement the 18k red gold case of this reference.

The longevity of a leather strap depends on the material and maintenance. A quality vegetable-tanned alligator strap, treated with neutral wax every two to three months and stored away from direct heat and moisture, will maintain structural and aesthetic integrity for three to five years with regular wear. Shell cordovan, owing to its dense fibre structure, is generally more durable. Casati Milano offers an 18-month guarantee against manufacturing defects on all its straps.