Breitling · Montbrillant

Strap for Montbrillant 01 Stainless Steel / Mercury Silver / Croco

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
ReferenceAB013012.G709.771P
FamilyMontbrillant
MovementBreitling caliber B01 hours, minutes, small seconds | date | Chronograph, column wheel | chronometer
Year2012
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Montbrillant AB013012.G709.771P

Selected for the 20 mm lug width

All 20 mm straps →

The Montbrillant AB013012.G709.771P, seen from the bench

The Breitling Montbrillant is equipped with the automatic caliber B01 with column-wheel chronograph function and COSC chronometer certification. The movement offers hour, minute, small seconds and date indication. The watch features 20mm lugs and combines chronograph functions with COSC-certified precision.

Frequently asked questions

What is the lug width of the Breitling Montbrillant AB013012.G709.771P?

The Breitling Montbrillant AB013012.G709.771P features a lug width of 20mm. This measurement should be taken using a digital calliper positioned internally between the lugs at the strap attachment point. Any compatible aftermarket strap must match this dimension precisely to ensure correct fitment and a clean aesthetic result at the case-strap junction.

What is the best strap for the Breitling Montbrillant AB013012.G709.771P?

For the Montbrillant AB013012.G709.771P, a vegetable-tanned calfskin strap offers the most balanced option for daily wear, developing a natural patina that complements the silver dial. Matte alligator is well suited to formal contexts, whilst a ballistic nylon NATO or vulcanised rubber strap is preferable for intensive or sport use. A brushed stainless steel deployant clasp maintains visual consistency with the case finish.

How do you change the strap on a Breitling Montbrillant AB013012.G709.771P?

To replace the strap on the Montbrillant AB013012.G709.771P, use a dual-tip springbar tool to disengage the springbars connecting the strap to the lugs. Insert the tool tip into the lateral lug slot, compress the springbar and slide the strap free. Care should be taken to avoid scratching the case: protect the surface with a soft cloth or low-tack masking tape before proceeding with the operation.

Are there aftermarket straps compatible with the Breitling Montbrillant AB013012.G709.771P?

Yes, the Montbrillant AB013012.G709.771P uses a standard 20mm lug width that is broadly supported by the aftermarket. It is however important to verify the curvature of the strap end: the lugs on this model feature a pronounced internal curve that not all manufacturers replicate accurately. Milanostraps.it offers a curated selection of compatible 20mm straps across various materials and finishes, all manufactured with attention to precise construction specifications.

How long does a leather strap last on a Breitling Montbrillant AB013012.G709.771P?

The lifespan of a leather strap depends primarily on material quality and maintenance. A quality vegetable-tanned calfskin strap worn daily typically lasts between 18 and 30 months. Shell cordovan, owing to its fibre density and compact surface structure, can exceed 3 to 4 years. Alligator leather, regularly treated with a conditioning cream, generally falls within the 2 to 3-year range. Prolonged exposure to moisture and perspiration accelerates deterioration; rotating between two straps is advisable to extend the life of both.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only