Titanium with brushed, shot-peened and satin-finished surfaces.

01 / Front view

Like many great ideas, the inspiration for HYT started with Man contemplating nature.The Hydro-Mechanical Horologists’s story has evolved over time and near water.In 2002, the scenery that caught Lucien Vouillamoz’s imagination was that of the Swiss lakes – the ones of Neuchâtel, Bienne and Morat.
In 2014, on the shore of the Léman Lake and facing the mythical Jet d’eau of Geneva, is born the H1 Quai du Mont-Blanc, an homage to our partnership with Montres Prestige, HYT’s first ambassador of the brand in Switzerland, located on Quai du Mont-Blanc.

After indicating the time with a yellow fluid – the brand's DNA – HYT has taken on a new ‘red fluid’ challenge: the colour of passion, of Geneva and of Switzerland. The liquid adjustement was not as simple as one could think and took eighteen technical months to perfect. Its classical minutes dial preserves the heritage of the traditional haute horlogerie whilst seamlessly integrating the perfection of the high fluid technology. With its proprietary unique caliber, the H1 Quai du Mont-Blanc movement is further enhanced by the beautiful Côte-de-Genève finitions.

Limited edition of 22 pieces, a nod at Geneva, the 22nd Canton of the Swiss Confederation.

An encounter between Fine Watchmaking and fluid mechanics.

An encounter between Fine Watchmaking and fluid mechanics. One might say a utopia. Shattering all certainties, steamrollering conformity, the idea that led to the H1 was simple and consisted of two flexible reservoirs fixed to each end of a capillary. In one was an aqueous liquid filled with fluorescein, and in the other, a transparent viscous liquid. To keep them separate : the repulsive force of the molecules in each liquid, with a meniscus to mark the boundary between the two.

The two reservoirs at 06:00.
While the first compresses,
the second expands,
and the other way round,
resulting in the movement
of the liquid in the capillary.

The Principe

As the hours go by, the fluorescent liquid advances. The meniscus, in the shape of a half moon, marks the breaking point with the other fluid in the tube, indicating the time. At 18:00, the fluorescent liquid comes back to its original position, going backwards. The secret that gets the reservoirs going ? Two bellows made of a highly resistant, flexible electro-deposited alloy, each driven by a piston. And this is where watchmaking comes in to activate the system.



Orchestrated by Jean-François Mojon and his Chronode SA team, a mechanical movement is situated in the upper part of the watch, and propels a cam, which pushes the piston and activates the bellows.

The main challenge lay in finding an interface between the mechanical movement and the hydro system in a closed, waterproof circuit - a task further complicated by the limited space available to house them both. They had to be assembled separately to keep them independent, and then made to operate simultaneously. This is a highly delicate modular integration, which involves other constraints, such as the installation of the dial in two parts, through the sides.


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Titanium with brushed, shot-peened and sating-finished surfaces

- Diameter: 48.8 mm

- Thickness: 17.9 mm

- Red rubber-clad screw-lock crown

- Titanium screw-locked added lugs

- Titanium dome at 06:00

- Cambered sapphire crystal glass with anti-reflective coating on the inside

- Screw-down sapphire back

- Water-resistant to 100 meters


Mechanical hand-wound, exclusive HYT calibre

- 28,800 vph, 4 Hz, 35 jewels

- Bridges hand-chamfered and adorned with Côtes de Genève, rhodiumed bellows

- 65-hour power reserve.



Unstructured, fluid jours

- grey hour dial, white indexes and black numerals

- black minute dial, grey indexes and numerals, grey minutes hand

- luminescent minute hand and hour-markers

- Regulator at 12:00

- Small seconds wheel at 09:30

- Power reserve indicator at 02:30


Retrograde red fluid hours, minutes, seconds.



Limited edition of 22 pieces


Grey alligator, titanium deployant buckle





The secret force driving the reservoirs is two bellows made of a highly resistant, flexible electro-deposited alloy, each driven by a piston. And this is where watchmaking comes in to activate the system.

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