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
ReferenceR2133012G624435X
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 R2133012G624435X

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Montbrillant R2133012G624435X, seen from the bench

The Breitling Montbrillant R2133012G624435X is a full calendar chronograph in 43mm Red Gold case rooted in 1950s Huit Aviation heritage, reinterpreted with contemporary haute horlogerie complexity. The Breitling Caliber 21 automatic movement powers hours, minutes, small seconds, day/night indication, date, day, and month. The 22mm lug width provides stable anchorage proportioned to the case diameter, accommodating leather and technical strap materials with gold-plated or red gold fittings.

Frequently asked questions

What is the lug width of the Breitling Montbrillant R2133012G624435X?

The Breitling Montbrillant R2133012G624435X features a 22mm lug width. This measurement should be verified with a digital calliper, measuring the internal gap between the lugs at the point closest to the case. This is a well-supported size with a broad selection of quality aftermarket straps available.

What is the best strap for the Breitling Montbrillant R2133012G624435X?

For a Red Gold 43mm case such as the Montbrillant, the most fitting choice is a glossy or semi-glossy alligator strap in dark chocolate brown or deep burgundy. Vegetable-tanned calfskin or shell cordovan are refined alternatives, offering chromatic warmth and durability. The buckle or deployant clasp should ideally be in red gold or gold-plated finish to maintain metallic coherence.

How do you change the strap on the Breitling Montbrillant R2133012G624435X?

Strap replacement requires removing the spring bars seated between the 22mm lugs using a fine-tipped springbar tool. It is advisable to work on a soft surface to avoid scratching the Red Gold case. If unfamiliar with the procedure, entrusting the operation to a watchmaker or the Casati Milano atelier is recommended.

Are there compatible aftermarket straps for the Breitling Montbrillant R2133012G624435X?

Yes, the Breitling Montbrillant R2133012G624435X is compatible with any aftermarket strap featuring a standard 22mm lug width and spring bars. Milano Straps offers a curated selection of handcrafted straps in alligator, calfskin, shell cordovan and other materials, available bespoke or in standard lengths, with buckles and deployant clasps in various metallic finishes.

How long does a leather strap last on a Breitling Montbrillant R2133012G624435X?

The lifespan of a leather strap depends on the material, frequency of wear and maintenance. A premium alligator strap, properly cared for and kept away from prolonged moisture exposure, typically lasts between three and five years. Vegetable-tanned calfskin has a comparable lifespan and develops a distinctive patina over time. Milano Straps provides an 18-month guarantee against manufacturing defects on all its 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