Strap for Montbrillant 01 Stainless Steel / Mercury Silver / Croco

The lug width of the Breitling Montbrillant AB013012|G735|718P is 20mm. This measurement, taken internally between the two lugs of the case, determines compatibility with any replacement strap. To verify it accurately, use a vernier calliper positioned directly against the inner surfaces of the lugs on the case.

For the Breitling Montbrillant with a 20mm lug width, a vegetable-tanned alligator strap with a satin finish is the most coherent choice given the character of the chronograph dial. Alternatively, a calf leather strap with a pronounced grain offers versatility for daily wear, whilst a technical nylon NATO strap honours the model's aviation heritage. Shell cordovan is recommended for those seeking longevity and resistance with minimal maintenance.

To replace the strap on the Breitling Montbrillant AB013012|G735|718P, the spring bars must be removed from the case lugs using a dedicated forked spring bar tool. The operation should be carried out carefully to avoid scratching the stainless steel case. It is advisable to rest the watch on a soft cloth and work in good lighting. The original Breitling spring bars typically have a diameter of 1.8mm.

Yes, any strap with a 20mm lug width is technically compatible with the 40mm Breitling Montbrillant. The aftermarket selection is extensive: from handcrafted alligator to calf leather, NATO to cordovan, and vulcanised rubber. It is important to ensure that the strap-end profile suits the slightly domed and tapered lugs of the Montbrillant, favouring straps with a tapered edge finish.

The lifespan of a leather strap depends on the material, tanning quality, and conditions of use. A high-quality vegetable-tanned alligator strap, properly maintained, typically lasts between 3 and 5 years with daily wear. Shell cordovan can exceed 7 to 10 years owing to the density of its fibre. Standard calf leather averages between 1 and 3 years. Avoiding prolonged contact with water and perspiration, and periodically applying a leather conditioner, significantly extends the strap's service life.