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Breitling · Montbrillant

Strap for Montbrillant 47

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

Lug width

20mm
20 mm strapsAll Breitling
Lug width20 mm
Case diameter47 mm
ReferenceA2335121.BA93.445A
FamilyMontbrillant
MovementBreitling caliber 23 hours, minutes, small seconds | date | Chronograph
Year2012 - 2012
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

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Straps for the Montbrillant A2335121.BA93.445A

Selected for the 20 mm lug width

All 20 mm straps →

The Montbrillant A2335121.BA93.445A, seen from the bench

The Montbrillant 47 (ref. A2335121.BA93.445A) is named after the Montbrillant boulevard in Besançon and La Chaux-de-Fonds, where Léon Breitling opened his first atelier in 1892. This 47mm stainless steel chronograph features a circular slide rule bezel, triple-register dial inspired by aircraft panel instruments, and the Breitling Caliber 23 automatic movement. The 20mm lug width is proportionally narrow relative to the case, creating a deliberate visual contrast typical of aviation chronographs where the case dominates and the strap serves as structural support.

Frequently asked questions

What is the lug width of the Breitling Montbrillant A2335121.BA93.445A?

The lug width of the Breitling Montbrillant A2335121.BA93.445A is 20mm. This measurement is taken internally between the two lugs at their narrowest point and is essential for determining compatibility with any aftermarket strap.

What is the best strap for the Breitling Montbrillant 47mm?

For the 47mm Montbrillant, a vegetable-tanned alligator strap with a steel deployant clasp is the most coherent choice given the watch's positioning. A matte wax-pull calf leather strap or a ballistic nylon NATO are solid alternatives for formal and sporting use respectively.

How do I change the strap on the Breitling Montbrillant A2335121.BA93.445A?

The strap is replaced using a fine-tipped spring bar tool to remove the 20mm spring bars securing the strap to the lugs. Place the case on a soft cushion to protect the dial and work carefully to avoid scratching the satin-finished surfaces of the case.

Are there aftermarket straps compatible with the Montbrillant A2335121.BA93.445A?

Yes. Any strap with a 20mm attachment is technically compatible. Milano Straps offers a curated selection of 20mm leather, rubber and textile straps suited to the Montbrillant, available online and customisable via the Casati Milano bespoke atelier.

How long does a leather strap last on a Breitling Montbrillant?

A quality leather strap — alligator or vegetable-tanned calf — typically lasts 2 to 4 years with regular use, depending on exposure to perspiration, humidity and periodic care with appropriate conditioning products. Milano Straps provides an 18-month guarantee against manufacturing defects.

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