Introduction
The Breguet Expérimentale 1 (ref. E001BH/S9/5ZV) is not a watch you buy to blend in. It’s a statement—a limited-edition piece that channels Breguet’s 250-year legacy into a thoroughly modern, almost avant-garde design. With its asymmetrical case, exposed balance wheel, and a dial that seems to float, this watch dares to be different. But does it survive a real week on the wrist? I wore it for seven days straight—through meetings, dinners, a weekend hike, and a rainy commute—to find out.
At first glance, the Expérimentale 1 looks like a concept watch that escaped the prototype room. The 40mm case is crafted from grade 5 titanium, brushed and polished in a way that catches light from every angle. The dial is a skeletonized affair, with a central hour and minute hand floating above a circular-grained mainplate. The balance wheel at 6 o’clock is the star of the show, beating away with a hypnotic 4 Hz rhythm. Yet despite its complexity, the watch remains remarkably legible—a feat that many skeleton watches fail to achieve.
This is a watch for the collector who values engineering over tradition, but who still demands the finishing and heritage that only a maison like Breguet can deliver. It’s not a daily beater, but it’s far from a safe queen. Let’s dive into the details that matter on the wrist.
Manufacture History
Founded in 1775 by Abraham-Louis Breguet in Paris, the brand moved to Switzerland in the 19th century and is now part of the Swatch Group. Breguet is credited with inventing the tourbillon, the Breguet overcoil, and the perpetual calendar. The Expérimentale line represents a modern, experimental spirit while honoring the founder’s relentless pursuit of precision.
Movement
The Cal. 777A is a high-frequency automatic movement with a silicon balance spring and a platinum micro-rotor. The bridges are hand-chamfered and decorated with Côtes de Genève, visible through the sapphire caseback. The movement is adjusted to six positions for optimal precision. With a 70-hour power reserve and 28,800 vph, it’s both robust and accurate. The date complication is displayed via a small window at 3 o’clock, discreetly integrated into the skeletonized dial.
Specifications
- Case Diameter: 40mm
- Case Thickness: 12.5mm
- Lug-to-Lug: 48mm
- Case Material: Grade 5 Titanium
- Crystal: Sapphire (box-shaped, with anti-reflective coating)
- Water Resistance: 100m
- Lume: Super-LumiNova X1 on hands and hour markers
- Strap: Black alligator leather with quick-release
- Clasp: Titanium deployant with double push-button
Wrist Feel
The Expérimentale 1 wears surprisingly light for its visual heft. The titanium case keeps the weight down to about 85 grams on the strap, and the 48mm lug-to-lug ensures it sits flat on my 6.75-inch wrist without overhang. The leather strap is supple from day one, with a quick-release system that makes swapping easy. The deployant clasp is well-machined and doesn’t dig into the skin.
Comfort is excellent for a watch with such an open dial. The skeletonization doesn’t create sharp edges; the case is smooth and the crown is easy to grip. I wore it under a dress shirt cuff without issue—the 12.5mm thickness slides under most cuffs. The only minor complaint is the lack of micro-adjustment on the clasp, but the strap breaks in quickly. For a watch that looks like a concept car, it feels like a daily driver.
Accuracy
Over seven days of mixed wear (office, active, and static overnight), the Expérimentale 1 averaged +3.2 seconds per day. The silicon balance spring and high-frequency escapement deliver consistent performance, even when exposed to moderate magnetic fields from laptops and phones. Day to day, you can expect +2 to +5 seconds, well within COSC standards even without certification.
Occasions
This watch is versatile enough for formal events, daily office wear, and travel. Its 100m water resistance means it can handle rain and hand-washing, but I wouldn’t take it swimming. The skeleton dial adds a touch of drama to a suit, yet it’s understated enough for casual jeans and a blazer. It’s not a sports watch, but it’s not a pure dress watch either—it’s a modern all-rounder.
Wrist Presence
5/5. The Expérimentale 1 commands attention without shouting. The open dial and titanium case create a unique light play that draws the eye. It’s a conversation starter, but not in a gaudy way—more like a subtle nod to horological sophistication. On the wrist, it feels like wearing a piece of modern art.
Reference Variants
The standard variant (E001BH/S9/5ZV) features a black ruthenium finish on the movement and a black alligator strap. A limited rose gold-accented version (E001BH/S9/5ZW) swaps the black for warm gold tones and a brown strap. Both are limited to 200 pieces each.
Family References
The Expérimentale line includes the Expérimentale 2 (ref. E002BH) with a chronograph complication and the Expérimentale 3 (ref. E003BH) featuring a tourbillon. All share the same titanium case and skeletonized philosophy.
Other Notable Breguet Models
If the Expérimentale 1 is too bold, consider the Breguet Tradition 7077 (a dual-time skeleton), the Classique 5177 (a classic enamel dial), or the Marine 5517 (a sportier option with a rubber strap).
Similar Watches
For a similar skeletonized aesthetic, the Patek Philippe Calatrava 5227 offers a more traditional approach, while the Vacheron Constantin Patrimony 81180 is ultra-thin and minimalist. The Audemars Piguet Royal Oak 15202 provides an integrated bracelet sports watch with comparable finishing.
Homages
If the budget doesn’t stretch to $20,000, the Seagull 1963 Skeleton (around $350) offers a hand-wound skeletonized dial with a vintage pilot-watch feel. It lacks the finishing and movement quality, but it captures the open-dial spirit.
Investment Value
With an MSRP not publicly disclosed (limited edition), the pre-owned market ranges from $18,000 to $22,000. The trend is stable, as limited production (200 pieces) and strong brand cachet support value. It’s not a quick flip, but a solid long-term hold for collectors who appreciate modern Breguet. No major auction history exists yet.
Service Interval
Breguet recommends service every 5 years. The cost is approximately $800, and due to the complex skeletonized movement and silicon components, service must be performed by Breguet or an authorized service center.
Pros and Cons
Pros: Exceptional finishing and skeletonization, lightweight titanium case, excellent legibility for a skeleton watch, comfortable on the wrist for all-day wear.
Cons: Limited water resistance for a sports watch, no micro-adjustment on clasp, pricey for a time-only watch, limited production makes it hard to find.
Final Verdict
The Breguet Expérimentale 1 is a masterclass in modern horology. It balances avant-garde design with everyday wearability, offering a skeletonized dial that is both legible and beautiful. If you can find one, it’s a worthy addition to any serious collection—a watch that celebrates Breguet’s past while looking firmly to the future.
