Breguet Expérimentale 1 Complication

quattro · 2025-12-20T11:59:20Z

Explore the Breguet Expérimentale 1 ref. E001BH/S9/5ZV. Discover its constant-force magnetic escapement, 10-hertz tourbillon, and unique design. A deep dive into Breguet's horological innovation.

quattro

WPS member · Breguet forum

24 replies996 views11 photos

Emmanuel, known as quattro on WatchProSite, presents an insightful photographic exploration of the Breguet Expérimentale 1. His detailed visual walkthrough highlights the innovative constant-force magnetic escapement and 10-hertz tourbillon, inviting the community to discuss this technically advanced and aesthetically distinctive timepiece. Emmanuel's post serves as a crucial resource for understanding Breguet's modern horological ambitions.

The Breguet Expérimentale 1, ref. E001BH/S9/5ZV features an innovative constant-force magnetic escapement and a tourbillon with a fast 10-hertz balance wheel ensuring maximum accuracy (precision certified in the scientific class: +/- 1s/day).

Some in-depth reviews can easily be found online, so I just want propose a quick photographic walk-through here.

What do you think of this watch?

Best, Emmanuel

The legibility of the regulator display does not seem to be optimal.

The design of the regulator display is inspired by the pocket watch ref. 3448.

According to Andrew Hildreth, in his article for i-m-magazine, the design is also reminiscent of the Montre produced by ex-Breguet artisan watchmaker Jean-Baptiste Viot.

The Breguet gold case measures 43.50 x 13.30 mm.

Here's the front face of the movement, calibre 7250, in a technical display version, without the crystal.

And here's the back side of the movement.

Here, the back of the movement with the case back of the watch.

The coin edged case profile.

And one last wristshot.

credit: Fratello, Monochrome, Swisswatches Magazine, A Collected Man (J-B Viot's watch) & @chers_d_œuvre_horlogers

Key Points from the Discussion

Despite a stated desire for innovation, collectors often gravitate towards classic designs, with purchasing habits reflecting a preference for traditional aesthetics over experimental novelties like the Expérimentale 1.
The Breguet Expérimentale 1 represents one of the most significant horological advancements in recent decades, yet its impact is diminished by coming from a brand less 'hot' than Patek Philippe or Rolex, leading to less extensive press coverage.
The aesthetic of the Expérimentale 1, with its modern design and movement, is not universally appealing and may not align with traditional Breguet brand identity for some collectors.
The regulator's unusual positioning, as depicted in the photos, raises questions about its factory setting and COSC certification, though it's likely a minor issue given the watch's overall performance.
The Expérimentale 1's innovation elevates modern Breguet to the same plane as Abraham-Louis Breguet himself, making it a highly desirable piece for collectors who prioritize technical advancement over decorative aspects.
The Expérimentale 1's forward-looking design, including its dial and overall aesthetic, is a positive direction for Breguet, demonstrating a willingness to innovate rather than solely relying on historical designs.

The Discussion

Arronax

Dec 20, 2025

The hands are very difficult to see, a lighter dial would help.

Bruno.M1

Dec 20, 2025

From a horological perspective, this is probably one of the most interesting watches of the past few decades. Unfortunately, it would only have received truly extensive coverage in the press if it had come from Patek or Rolex. When a less “hot” brand brings something exceptional to market, it somehow seems to be treated as less important. And that’s a shame, because this is objectively exceptional. That said, on a personal level… the looks are absolutely not for me. I simply find it ugly. Far to

dedestexhes

Dec 20, 2025

Cutting edge, new looks for the dial etc. So why not continue to do so instead of always going back to the past? Although not a watch ch for me, I’m very happy with the direction taken! Dirk

quattro

Dec 20, 2025

but the result isn’t always fully convincing. And remaining faithful to tradition has also its importance, imo. Best, Emmanuel

ZSHSZ

Dec 20, 2025

As it turns out from my personal observations here and real life talks with collectors, we all demand “something different from the beaten path” but in actuality we like classic designs and we vote with our wallets for the same exact classic looking watches. This are novelties that few will ever buy, let alone wear! I played with most of this new anniversary pieces and the one that actually impressed me was the 7235 technically as well as esthetically! Now as for this one, it’s just not a watch

quattro

Dec 20, 2025

Very interesting and I must say I agree with you on all counts (except that I have only seen in person the Souscription and the Type XX)... Best, Emmanuel

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