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
ReferenceR2133012B856435X
FamilyMontbrillant
MovementBreitling caliber 21 hours, minutes, small seconds, day / Night Indication | date, day, month | Chronograph
Year2002
CaseRed Gold

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 R2133012B856435X

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Montbrillant R2133012B856435X, seen from the bench

The Breitling Montbrillant houses the caliber 21 with functions of hours, minutes, small seconds, day/night indicator, full date, and chronograph. The model features 22mm lugs and combines chronograph complications with a full calendar. The reference R2133012B856435X is part of the collection dedicated to precision aviation instruments.

Frequently asked questions

What is the lug width of the Breitling Montbrillant R2133012B856435X?

The Breitling Montbrillant R2133012B856435X features a lug width of 22mm. This measurement is standard across the entire 43mm Montbrillant line and ensures broad compatibility with aftermarket straps available in the 22mm size.

What is the best strap for the Breitling Montbrillant R2133012B856435X?

For a red gold chronograph such as the Montbrillant, a vegetable-tanned alligator strap with a glossy finish or a shell cordovan strap are the most fitting choices. Bordeaux and cognac tones complement the warm hues of the red gold case, whilst navy blue offers a classic contrast rooted in the model's aviator heritage. For everyday wear, a vulcanised rubber strap in 22mm provides a practical and durable alternative.

How do you change the strap on the Breitling Montbrillant R2133012B856435X?

Strap replacement requires a spring bar tool (fork-tip lug wrench) inserted between the lug and the strap to compress and release the spring bars. The Montbrillant's curved and slightly tapered lugs call for a fine-tipped tool to avoid scratching the red gold case. The operation can be carried out independently with appropriate tools or entrusted to a watchmaker or the Casati Milano atelier.

Are there aftermarket straps compatible with the Breitling Montbrillant R2133012B856435X?

Yes, all standard 22mm straps with a flat end are compatible with the Montbrillant. Milano Straps offers a dedicated selection of handcrafted 22mm straps in alligator, shell cordovan, calf leather, and rubber, available bespoke or in standard sizes online. Typical taper is 22/20mm or 22/18mm depending on aesthetic preference.

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

The lifespan of a leather strap depends on leather quality, frequency of use, and exposure to moisture and perspiration. A high-quality vegetable-tanned alligator strap, properly maintained and rotated with other straps, can last between 3 and 7 years whilst developing a distinguished patina. Shell cordovan, owing to its dense fibre structure, generally outlasts most other leather options. Milano Straps provides an 18-month guarantee against manufacturing defects on all handcrafted straps.

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