Breitling · Montbrillant

Strap for Montbrillant Datora

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter43 mm
ReferenceA2133012G518
FamilyMontbrillant
MovementBreitling caliber 21 hours, minutes, small seconds, day / Night Indication | date, day, month | Chronograph
Year2002
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 A2133012G518

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Montbrillant A2133012G518, seen from the bench

The Breitling Montbrillant A2133012G518 is a chronograph embodying 1950s–60s civil aviation aesthetics within a 43mm stainless steel case. At its core beats the automatic Breitling Caliber 21, a COSC-certified movement featuring chronograph, hours, minutes, small seconds, day/night indicator, date, day, and month. The 22mm lug width is calibrated to balance the case diameter and quadrant architecture. The dial integrates tachymeter scale, telemeter, and circular cursor scale for functional readability.

Frequently asked questions

What is the lug width of the Breitling Montbrillant A2133012G518?

The lug width of the Breitling Montbrillant A2133012G518 is 22mm. This measurement refers to the internal distance between the lugs at the case and is the critical parameter for selecting a compatible strap. Any standard 22mm strap will fit this model correctly.

What is the best strap for the Breitling Montbrillant A2133012G518?

The most suitable straps for the Montbrillant A2133012G518 are wide-grain alligator for formal wear, vegetable-tanned calfskin for those who appreciate a natural patina over time, or vulcanised rubber for sport use. A brushed steel deployant clasp is the most coherent closure choice given the case aesthetics.

How do you change the strap on a Breitling Montbrillant A2133012G518?

To replace the strap on the Montbrillant A2133012G518, a double-ended springbar tool is all that is required. Compress the spring bar within the lug, slide out the original strap and insert the new 22mm strap, ensuring both spring bars engage correctly. No movement or case intervention is necessary.

Are there aftermarket straps compatible with the Breitling Montbrillant A2133012G518?

Yes, the Breitling Montbrillant A2133012G518 accepts any aftermarket strap with a standard 22mm width and spring bar fitting. Milano Straps offers a curated selection of handcrafted straps in Italian leather, alligator, shell cordovan and NATO webbing, all made with 22mm fittings certified compatible with Breitling lugs.

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

The lifespan of a leather strap depends on the quality of the tanning process and daily use. A vegetable-tanned calfskin strap of artisanal quality typically lasts 2–4 years with regular wear. Alligator leather, owing to its denser grain structure, can exceed 5 years. Avoiding prolonged exposure to water and perspiration significantly extends the strap's service life.

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