Technical Archive

Breguet
Classique 5717BR/AS/9ZU— lug 18mm

Breguet Classique 5717BR/AS/9ZU: 18mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Classique Hora Mundi 5717 Rose Gold / Asia - Oceania

Artisanal Note

"This model requires a precise 18mm lug width to preserve the original sartorial balance."

Technical Specifications

Breguet 5717BR/AS/9ZU
Lug Width
18 mm

The essential strap measurement.

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Reference

5717BR/AS/9ZU

Movement

Breguet caliber 77F0 Hours, Minutes, Seconds, Additional 24 Hour Hand (adjustable), Day / Night Indication | Date

The Heritage

The Breguet Classique 5717BR/AS/9ZU is a 43mm rose gold case watch from the Classique collection, featuring the in-house Breguet calibre 77F0 automatic movement. The dial displays hand-guillochéd texture, Breguet hands, Arabic numerals, date window, GMT function with independent 24-hour hand, and day/night indicator. The 18mm lug width accommodates compatible straps.

FAQ

What is the lug width of the Breguet Classique 5717BR/AS/9ZU?

The Breguet Classique 5717BR/AS/9ZU is fitted with an 18mm lug width. To verify this directly on the watch, measure with a digital caliper the internal distance between the two case lugs: this measurement corresponds to the compatible strap width.

What is the best strap for the Breguet Classique 5717BR/AS/9ZU?

For a rose gold Classique, the most appropriate strap is Mississippiensis alligator belly leather with symmetrical grain in cognac or tobacco tones. Polished box-calf leather represents a more understated alternative that develops patina over time. Both options enhance the guilloché texture of the dial without competing with it.

How do you change the strap on the Breguet Classique 5717BR/AS/9ZU?

The strap is replaced using a fine-tipped spring bar tool, inserted into the lateral slot of the spring bar positioned between the lugs. With gentle pressure toward the center, the spring bar retracts and the strap releases. For a rose gold Breguet, it is recommended to protect the case with a soft cloth during this operation to avoid scratching the surface.

Are there aftermarket straps compatible with the Breguet Classique 5717BR/AS/9ZU?

Yes. The Breguet Classique 5717BR/AS/9ZU uses a standard 18mm spring bar, compatible with the wide range of aftermarket straps available at Milano Straps. It is important to verify the length of the strap ends and the shape of the tips, preferring a tapered profile that adapts to the rounded lugs typical of the Classique case.

How long does a leather strap last on a Breguet Classique?

A quality artisanal alligator or calf strap, with proper maintenance, has an average lifespan of 2-4 years with daily use. Longevity depends on exposure to sweat, moisture, and UV rays. Occasionally applying a conditioner specifically formulated for fine leathers and avoiding prolonged contact with water significantly extends the strap's lifespan and preserves the patina.

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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The atelier's website: casatimilano.com