Breguet · Classique

Strap for Classique 5177 White Gold / Blue Enamel

The Classique 5177 White Gold / Blue Enamel takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

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Lug width20 mm
Case diameter38 mm
Reference5177BB/2Y/9V6
FamilyClassique
MovementBreguet caliber 777Q Hours, Minutes, Seconds | Date
Year2019
CaseWhite 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 Classique 5177BB/2Y/9V6

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Classique 5177BB/2Y/9V6, seen from the bench

The Breguet Classique reference 5177BB/2Y/9V6 is powered by the in-house automatic caliber 777Q. The watch features hour, minute, second and date functions. The Classique collection represents the contemporary expression of the historical stylistic codes of the Parisian maison.

Frequently asked questions

What is the lug width of the Breguet Classique 5177BB/2Y/9V6?

The Breguet Classique 5177BB/2Y/9V6 is fitted with a 20mm lug width. This is the standard measurement to reference when purchasing a compatible strap. To verify, use a digital caliper to measure the inner distance between the two lugs at the strap attachment point.

What is the best strap for the Breguet Classique 5177BB/2Y/9V6?

For the white gold case and ivory guilloché dial of the 5177BB/2Y/9V6, the most appropriate strap is smooth alligator—belly or hornback—in midnight blue or cognac brown. The blue complements the blued steel pomme hands, while cognac enhances the warm tone of the dial. Box-calf leather represents an elegant alternative for daily wear.

How do you change the strap on the Breguet Classique 5177BB/2Y/9V6?

The strap on the Breguet Classique 5177BB/2Y/9V6 is secured with standard 20mm spring bars. Replacement requires a dedicated lever tool or a thin flat screwdriver to release the bars from the lug slots. It is recommended to have the strap changed by a watchmaker or authorized dealer to avoid scratching the white gold case.

Are there aftermarket straps compatible with the Breguet Classique 5177BB/2Y/9V6?

Yes, any strap with a 20mm lug width is technically compatible with the Breguet Classique 5177BB/2Y/9V6. Milano Straps offers a selection of artisanal straps in alligator, calf leather, and other materials specifically designed for high-end dress watches. You can choose from available models online or request a custom strap through the Casati Milano atelier.

How long does a leather strap last on a Breguet Classique 5177BB/2Y/9V6?

The lifespan of a leather strap depends on the material, frequency of use, and care. Quality alligator, with regular use and attention to humidity, typically lasts between 2 and 4 years while maintaining structural and aesthetic integrity. Box-calf develops a prized patina over time but requires greater care around water. Milano Straps straps are covered by an 18-month warranty 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

The atelier's website: casatimilano.com