Technical Archive

Breguet
Classique Complications 3797BR/1E/9WU— lug 18mm

Breguet Classique Complications 3797BR/1E/9WU: 18mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Tourbillon Perpetual Calendar  3797 Rose Gold / Silver

Artisanal Note

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

Technical Specifications

Breguet 3797BR/1E/9WU
Lug Width
18 mm

The essential strap measurement.

Browse 18mm straps →
Reference

3797BR/1E/9WU

Movement

Breguet caliber 558QP2 Hours, Minutes, Small Seconds | Date, Day, Leap Year, Month, Perpetual Calendar | Tourbillon Escapement

The Heritage

The Classique Complications reference 3797BR/1E/9WU is equipped with the Breguet 558QP2 caliber with tourbillon escapement and complete perpetual calendar. The movement displays hours, minutes, small seconds, date, day, month and leap year through the perpetual calendar system. The tourbillon complication is combined with the perpetual calendar functions in the traditional Breguet configuration.

FAQ

What is the lug width of the Breguet Classique Complications 3797BR/1E/9WU?

The Breguet Classique Complications 3797BR/1E/9WU is fitted with an 18mm lug width. This measurement refers to the inner distance between the two lugs of the rose gold case and is the correct specification to provide when ordering an aftermarket or custom replacement strap.

What is the best strap for the Breguet Classique Complications 3797BR/1E/9WU?

For this rose gold reference with tourbillon and perpetual calendar, a louisianensis or mississippiensis alligator strap with vegetable tanning is the most coherent choice. The natural texture of the reptile skin complements the hand-guillochéd dial. The most suitable colors are burgundy, dark tobacco, or chocolate brown to enhance the warm reflections of the rose gold. A formal alternative is polished box calf leather with a smooth finish.

How do you change the strap on the Breguet Classique Complications 3797BR/1E/9WU?

Strap replacement requires a fine-tipped springbar tool to remove the spring bars securing the strap to the 18mm lugs of the rose gold case. It is recommended to work on a scratch-resistant mat with the case inverted, proceeding carefully to avoid damaging the polished surfaces of the Classique Complications. If in doubt, consult a watchmaker or the Casati Milano atelier.

Are there aftermarket straps compatible with the Breguet Classique Complications 3797BR/1E/9WU?

Yes. All straps with 18mm lugs are technically compatible with the Breguet Classique Complications 3797BR/1E/9WU. Milano Straps offers a selection of artisanal straps in alligator, calf, and other fine materials crafted specifically for high-end dress watches. The closure width is typically 16mm to accommodate the original buckle or an aftermarket deployant clasp.

How long does a leather strap last on a Breguet Classique Complications 3797BR/1E/9WU?

The lifespan of a leather strap depends on the quality of the leather, tanning method, and daily use. A premium-grade alligator strap with vegetable tanning, with regular maintenance and rotation with other straps, can last three to five years while maintaining structural integrity and noble patina. Milano Straps artisanal 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.

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By appointment only · Milan

The atelier's website: casatimilano.com