titanium with shot-peened and satin-finished surfaces brushed pink gold (5N) bezel and lugs.
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.
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.
A MECHANICAL MOVEMENT
TO ACTIVATE THE HYDRO SYSTEM
Orchestrated by Brino Moutarlier, alongside 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.
Titanium in black DLC with brushed, shot-peened and sating-finished surfaces
- Diameter: 48.8 mm
- Thickness: 17.9 mm
- Grey rubber-clad screw-lock crown
- Crown guard
- Screw-locked added lugs
- Metal 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
- Silver dial, pink gold (5N) indexes & numerals , pink gold (5N) minute
- Luminescent hand and hour-markers
- Regulator at 12:00
- Small seconds wheel at 09:30
- Power reserve indicator at 02:30
Retrograde fluid hours, minutes, seconds.
Grey rubber, titanium pin 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.