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
ReferenceA2133012Q509222A
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 A2133012Q509222A

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Montbrillant A2133012Q509222A, seen from the bench

The Breitling Montbrillant A2133012Q509222A is a 43mm stainless steel chronograph designed for aviation professionals. It features the Breitling 21 automatic movement with hours, minutes, small seconds, day/night indicator, date, weekday, month, and integrated chronograph. The lug width is 22mm, a standard size for sport watches that ensures compatibility with quality aftermarket straps. The watch combines a tachimetric dial with asymmetric counters and calculator bezel in a robust, instrument-rated design.

Frequently asked questions

What is the lug width of the Breitling Montbrillant A2133012Q509222A?

The lug width of the Breitling Montbrillant A2133012Q509222A is 22mm. This measurement refers to the internal distance between the two lugs on the case and determines the correct strap attachment width.

What is the best strap for the Breitling Montbrillant A2133012Q509222A?

For the Montbrillant A2133012Q509222A, vegetable-tanned Tuscan leather straps in havana or cognac tones best complement the instrument-style dial. Hornback alligator suits formal occasions, while ballistic nylon NATO straps suit more active wear. All must feature a 22mm attachment.

How do I change the strap on a Breitling Montbrillant A2133012Q509222A?

To replace the strap on the Montbrillant A2133012Q509222A, use a spring bar tool or a flat-tipped spatula to release the spring bars from the lugs. Place the watch face-down on a soft cloth to avoid scratching the satin-finished case surfaces before proceeding.

Are there aftermarket straps compatible with the Breitling Montbrillant A2133012Q509222A?

Yes, any strap with a 22mm attachment and standard length (typically 120/75mm or 115/75mm for average wrists) is compatible with the Montbrillant A2133012Q509222A. Milano Straps offers a curated selection of handcrafted leather, rubber and fabric straps available in this size.

How long does a leather strap last on a Breitling Montbrillant A2133012Q509222A?

The lifespan of a leather strap depends on the quality of the tanning process and daily use conditions. A vegetable-tanned Tuscan leather strap, kept away from excessive moisture and perspiration, will typically last 2 to 4 years with regular wear. Shell cordovan tends to last considerably longer due to the dense fibre structure of the leather.

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