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
ReferenceR2133012Q578220R
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 R2133012Q578220R

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Montbrillant R2133012Q578220R, seen from the bench

The Breitling Montbrillant Datora R2133012Q578220R is a professional chronograph featuring a 43mm rose gold case and Caliber 21 automatic movement with vertical column and column wheel. It includes hours, minutes, small seconds, day/night indicator, date, day, month, and chronograph functions. The dial displays tachimetric and conversion scales with vintage styling. The 22mm lug width requires robust straps to match the case's proportions and accommodate a tapered design from 22mm to 18–20mm.

Frequently asked questions

What is the lug width of the Breitling Montbrillant R2133012Q578220R?

The Breitling Montbrillant R2133012Q578220R has a lug width of 22mm. This measurement is taken internally between the two case lugs at their narrowest point, closest to the case. A 22mm strap tapering to 18mm or 20mm ensures a proper anatomical fit on the wrist.

What is the best strap for the Breitling Montbrillant R2133012Q578220R in red gold?

For an 18-carat red gold case such as the Montbrillant's, the most suitable strap is a vegetable-tanned alligator in bordeaux or dark brown, which complements the warm chromatic tones of the case. Alternatively, a cognac or tobacco-coloured Tuscan calfskin offers an elegant luminous contrast. Both options are available in 22mm lug width at milanostraps.it.

How do I change the strap on the Breitling Montbrillant R2133012Q578220R?

The strap is removed by engaging the spring bars with a dedicated springbar tool, inserting the tip into the lateral slot of the lug and compressing the bar until it releases. For an 18-carat red gold timepiece, it is advisable to use a plastic-tipped or coated springbar tool to avoid scratching the case. The operation takes under two minutes without professional equipment.

Are there aftermarket straps compatible with the Breitling Montbrillant R2133012Q578220R?

Yes. Any strap with a 22mm attachment is compatible with the Montbrillant. Milanostraps.it offers options in alligator, calfskin, shell cordovan, rubber and NATO, all in 22mm lug width. For a fully bespoke strap with personal leather selection, appointments are available at Casati Milano atelier.

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

The lifespan of a leather strap depends on leather quality and daily care. A premium vegetable-tanned alligator strap, worn in rotation with other watches and kept away from excessive moisture, maintains structural and aesthetic integrity for 3 to 5 years. Casati Milano straps come with 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