Technical Archive

Breguet
Héritage 5400BB/12/9V6— lug 18mm

Breguet Héritage 5400BB/12/9V6: 18mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Héritage Chronograph White Gold / Silver

Artisanal Note

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

Technical Specifications

Breguet 5400BB/12/9V6
Lug Width
18 mm

The essential strap measurement.

Browse 18mm straps →
Reference

5400BB/12/9V6

Movement

Breguet caliber 550/1 Hours, Minutes, Small Seconds | Date | Chronograph, Column wheel

The Heritage

The Breguet Héritage 5400BB/12/9V6 chronograph features a 35 mm white gold 18k case with a cream mother-of-pearl dial and white gold applied indices. The watch is powered by the in-house Breguet 550/1 calibre, which includes hours, minutes, small seconds at 6 o'clock, date window, and column-wheel chronograph. The Heritage family honors Abraham-Louis Breguet's elongated forms and tonneau cases from the 18th century. The 18 mm lug width is suited for wrists between 16–18 cm.

FAQ

What is the lug width of the Breguet Héritage 5400BB/12/9V6?

The Breguet Héritage 5400BB/12/9V6 is fitted with an 18mm lug width. This measurement is taken with calipers between the lugs at the strap attachment point and represents the standard width required for strap replacement.

What is the best strap for the Breguet Héritage 5400BB/12/9V6?

For a white gold Breguet Héritage 5400BB/12/9V6, an alligator strap in Mississippiensis with hornback grain or Louisiana finish is the most appropriate choice for this timepiece's positioning. A polished black or midnight blue complements the white gold case perfectly, enhancing the formal restraint of the dial. For less formal occasions, a finely textured calf leather strap in antique gray offers considerable sophistication.

How do you change the strap on the Breguet Héritage 5400BB/12/9V6?

The strap on the Breguet Héritage 5400BB/12/9V6 is removed using a spring bar tool and either a flat-head screwdriver or a dedicated spring bar removal tool. It is recommended to have the work performed by a watchmaker or specialized atelier to avoid scratches on the white gold case. Milano Straps and Casati Milano offer assembly assistance during atelier consultations.

Are there aftermarket straps compatible with the Breguet Héritage 5400BB/12/9V6?

Yes, any strap with an 18mm lug width is technically compatible with the Breguet Héritage 5400BB/12/9V6. Milano Straps offers a selection of artisanal 18mm straps in alligator, calf, ostrich leather, and NATO, crafted to pair aesthetically and functionally with this model without compromising its visual identity.

How long does a leather strap last on the Breguet Héritage 5400BB/12/9V6?

A quality leather strap for the Breguet Héritage 5400BB/12/9V6 has an average lifespan of 18-36 months with daily use, varying depending on exposure to perspiration, water, and UV rays. Casati Milano straps are made with carefully selected leathers and reinforced stitching, and come with an 18-month warranty against manufacturing defects. Rotating between two straps significantly extends the life of both.

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