Today’s reality is a watch that breaks new scientific ground, measuring time’s passage with a patented fluidic module that took 15 years of inspiration to develop.


Finding a dye with the necessary visibility, esthetics, durability and UV resistance to represent time’s passage led to the sphere of advanced chemistry. Scientific inspiration then found its way into HYT’s own lab, where all dyes used in the timepieces now first see the light of day – and night.


At HYT we refer to the meeting of the two liquids representing time past and time forward, i.e. the present, as a meniscus. Both fluids are prepared well in advance to ensure they’re compatible for lifetime. That means a harmonious union of two individual entities that complement and never compromise each other.

Glass Capillary

The HYT team travelled the world, with stopovers in both art and science, to find suppliers able to curve the 0.8 mm thick glass tubes that trace time’s path in our watches. When the search ended without success, HYT returned home to create their own high-tech machinery to perform this exacting task.


The coating of the capillaries in an HYT watch is one of its most expensive elements. It has the crucial task of ensuring the two liquids, with opposing properties, flow as smoothly as time itself. The coating also has to be fully transparent to enable the visualization of time. This high-tech development taking its inspiration from the semi-conductor industry rises to the occasion on both fronts.


Two bellows form the heart and soul of HYT’s fluid time. Located at 6 o’clock, their walls are made of a highly resistant, flexible alloy, four times finer than a human hair. As one bellow compresses to release one of the two liquids, the other expands to receive the second one. Aerospace inspiration provided the key to defying gravity.

Thermal compensator

HYT watch ensures that liquid expansion due to temperature variation never gets in the way of time’s fluidity. This elegant solution is contained in a small bellow within one of the main bellows of the patented fluidic module.

Fluidic module

It took 15 years and much inspiration from the aerospace, medical device and semi-conductor sectors to develop the patented fluidic module. Defying gravity is just one of the challenges the resultant mechanism overcomes. Driven by the fact that time’s flow can’t be stopped, two bellows form its engine. As each one compresses or expands it releases or receives one of the two liquids corresponding to either elapsed or imminent time.


It takes a year to train technicians to fill the capillary of an HYT watch with the two contrasting liquids. The tiniest air bubble could interact with the pressure, compromising the precision of measuring time’s flow, for example at altitude. That’s why we invented dedicated machines and processes to demonstrate our belief that every second counts.


HYT is focused on writing horological history rather than reading it. To ensure long-term stability we created our own testing equipment with the ability to accelerate time. A major temperature increase turns a year into a month. As a result, 40 months of durability testing prove that our fluids will be accurately telling the time 40 years from now.

Movement interface

Time’s passage is visualized by a fluidic module; its rhythm comes from a specially developed haute horlogerie mechanical movement. The moment when these two elements meet has to be love at first sight to stand the test of time. The caliber is placed carefully on the bellows by steady, highly skilled hands that know there’s no margin for error and every need for unity.


Twice a day, an HYT watch offers the opportunity to reflect on the 12 precious hours that have just elapsed. Without losing a single second in timekeeping terms, the colored liquid switches to rewind mode when it gets to the end of the capillary and flows back to its original position. This fascinating replay of time’s passage lasts approximately 60 seconds.

Independant brand

An expected renaissance and a long-term development of the brand has thus been ensured by a Swiss company.

“I am delighted to take over the lead of this magnificent brand. HYT has brought a new dimension to the watchmaking industry via ground-breaking innovation, which clearly positions it as the maverick of luxury watchmaking for the new Millennium. We are already working to continue to fulfil this promise of perpetual innovation, to win back watchmaking aficionados, as well as collectors, and to push the existing technical limits by creating a new pleasure in wearing a luxury watch. A pleasure combining with “mastery” mechanical virtuosity, liquid displays and cutting-edge design”, says Davide Cerrato, the new CEO of HYT.


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