Technical Archive

Breitling
Montbrillant AB013012.G709.771P— lug 20mm

Breitling Montbrillant AB013012.G709.771P: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Montbrillant 01 Stainless Steel / Mercury Silver / Croco

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Breitling AB013012.G709.771P
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

AB013012.G709.771P

Movement

Breitling caliber Caliber B01 Hours, Minutes, Small Seconds | Date | Chronograph, Column wheel | Chronometer

The Heritage

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.

FAQ

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.