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
ReferenceR2133012Q537737P
FamilyMontbrillant
MovementBreitling caliber Caliber 21 Hours, Minutes, Small Seconds, Day / Night Indication | Date, Day, Month | Chronograph
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 R2133012Q537737P

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Montbrillant R2133012Q537737P, seen from the bench

The Montbrillant is a Breitling chronograph powered by the Caliber 21 with hour, minute, small seconds, and day/night indicator functions. It features complete calendar complications with date, day, and month, as well as chronograph function. The watch has 22mm lugs for the strap.

Frequently asked questions

What is the lug width of the Breitling Montbrillant R2133012Q537737P?

The lug width of the Breitling Montbrillant R2133012Q537737P is 22mm. This measurement should be taken with a vernier calliper directly between the lugs on the case, rather than relying on the original strap, which may feature tapered edges that give an inaccurate reading.

What is the best strap for the Breitling Montbrillant in Red Gold?

For the Montbrillant in Red Gold, an alligator belly strap in vegetable-tanned leather in Cognac or Havana tones is the most aesthetically coherent choice: the natural grain complements the busy dial and the warm hues of the red gold case. Shell cordovan and aged calfskin are excellent alternatives for those seeking a more understated character or a natural patina over time.

How do you change the strap on a Breitling Montbrillant?

The strap on the Breitling Montbrillant is secured by standard 22mm spring bars. Using a suitable spring bar tool or a thin-bladed screwdriver, compress the spring bar laterally to release the strap from the lug. No case opening is required, and the operation can be performed independently with the correct tools.

Are there aftermarket straps compatible with the Breitling Montbrillant R2133012Q537737P?

Yes, any strap with a 22mm attachment and standard spring bars is compatible with the Breitling Montbrillant R2133012Q537737P. Milano Straps offers a curated selection of handcrafted leather, NATO and rubber straps specifically produced for this lug width, available online or fully customisable at the Casati Milano atelier.

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

The lifespan of a leather strap depends on the quality of the tanning, the hide thickness and daily use. A handcrafted alligator or vegetable-tanned calfskin strap, with proper care (avoiding water immersion and conditioning periodically with natural wax), typically lasts 2 to 4 years with regular wear. Milano Straps products carry 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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only