Technical Archive

Breguet
Classique 7137BB/11/BV0— lug 18mm

Breguet Classique 7137BB/11/BV0: 18mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Classique 7137 White Gold / Silver / Bracelet

Artisanal Note

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

Technical Specifications

Breguet 7137BB/11/BV0
Lug Width
18 mm

The essential strap measurement.

Browse 18mm straps →
Reference

7137BB/11/BV0

Movement

Breguet caliber 502.3 DR1 Hours, Minutes | Date | Moonphase | Power Reserve Indicator

The Heritage

The Classique reference 7137BB/11/BV0 is equipped with the Breguet 502.3 DR1 caliber, indicating hours, minutes, date, moon phases, and power reserve. The self-winding mechanical movement features the traditional astronomical complications of the manufacture. The case exhibits the characteristic Breguet finishes with a silvered dial and typical collection hands.

FAQ

What is the lug width of the Breguet Classique 7137BB/11/BV0?

The Breguet Classique 7137BB/11/BV0 is fitted with an 18 mm lug width. It is important to measure the internal distance between the case lugs with a precision caliper before purchasing an aftermarket strap, as even half a millimeter difference can compromise the fit.

What is the best strap for the Breguet Classique 7137BB/11/BV0?

For the Classique 7137BB/11/BV0 in white gold, the most suitable strap is matte alligator — Mississipiensis or Hornback — with a white gold buckle or brushed steel deployant clasp. Midnight blue and burgundy are the historically most paired colors with Breguet Classique watches. Box-calf leather is a valid alternative for a more contemporary aesthetic.

How do you change the strap on the Breguet Classique 7137BB/11/BV0?

Strap replacement is performed with a fine-pointed spring bar tool, applying leverage to the spring bar at one of the two lugs. It is recommended to place the case on a soft cloth to avoid scratches on the white gold and to work carefully to avoid deforming the lugs. Alternatively, Casati Milano offers in-atelier installation service by appointment.

Are there aftermarket straps compatible with the Breguet Classique 7137BB/11/BV0?

Yes, milanostraps.it offers a selection of 18mm straps compatible with the Breguet Classique 7137BB/11/BV0, handcrafted in Italy. Quality aftermarket straps in alligator or calf leather allow you to personalize the watch while preserving its original value and aesthetics, at a fraction of the cost of the Breguet factory strap.

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

A quality leather strap — alligator or vegetable-tanned calf — mounted on a Breguet Classique has an average lifespan of 2–4 years with daily use, varying based on exposure to perspiration, water, and UV rays. Proper maintenance with nourishing cream specific to fine leathers and rotating between multiple straps can significantly extend the material's life. Casati Milano guarantees its straps for 18 months 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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By appointment only · Milan

The atelier's website: casatimilano.com