Introduced in 2019, HYT H5 is the latest opus to the Swiss luxury watch brand’s revolutionary fluid time saga that unites science, hi-technology, philosophy, art and design. Using a design language focused on three-dimensionality and transparency, this hydro-mechanical timepiece by HYT reveals time’s passage in the form of a coloured liquid.
Running steadily through a fine capillary, the fluid frames a multi-layered horological masterpiece where movement is the constant. The brand launched two versions (black and green) in 2019. This year, the collection welcomes blue and red variants.

The H5 hydro-mechanical watch is powered by a propriety calibre, the 501. In this unique movement, a hand-winding unit sets a consistent pace. This releases precisely the right amount of energy for two contrasting immiscible liquids to represent the recent past, the present and the near future.
Visible through the see-through sapphire case back, an intricately shaped cam offers thirteen different possibilities to adjust and index the hour and minute indications, ensuring they operate as one.
An over-sized, curved lever connects the movement’s collaborating elements. This orchestrates a complex chain reaction, whereby the caliber pushes against a regulating bellow four times thinner than a human hair to launch time’s next twelve-hour journey.
The HYT H5 is dedicated to measuring time in a way that draws attention to both its intrinsic passage and precious essence. An architectural approach, inspired by erosion, reveals the layers that create the whole in all its purity. Three-dimensionality and transparency invite viewing from all angles – by a generation obsessed with artificial intelligence and new virtual territories.
A domed sapphire glass is ingeniously curved around a bold stainless-steel case to simultaneously present and protect. Stratified metal components, stepping and sinuous lines support the design’s strong storyline. The innovative neoralite external flange, with its cut-out numerals further enhance the H5’s fascination with perspective.
The striking vertical digits appear to float around the watch during the day and start to glow as darkness falls. Created from one single piece of luminescent, Super-LumiNova®-filled, translucent material, this component’s complex production process involves 3D printing, molding, injection and subtle grinding.
Presently, HYT H5 is available in blue, red, green and black editions. Each variant comes in a limited edition of 25 pieces.
Technical details
Case
Stainless steel, satin finishes
Diameter: 48.8mm
Height: 20.08mm
Stainless steel crown
Domed sapphire crystal
Screwed case-back, sapphire crystal, “one of twenty-five” print
Water-resistant to 50 meters
HYT’s exclusive patented micro-fluidic module
Borosilicate glass capillary tube, nano-coating interior
Multi-layer metal bellows
Two immiscible liquids; one transparent, the other one colored with a highly resistant dye
Thermal compensator with dedicated bellow and specific liquid
High-tech ceramic fluidic restrictors
Movement
Mechanical with manual winding, exclusive caliber
28,800 Vph, 4 Hz, 41 jewels
Rhodium thinly-sandblasted bridges
65-hour power reserve
Interface
Transmission between movement and fluidic module by conversion of rotation into linear movement using a cam-follower system
Isostatic connection of the fluidic system guaranteed by a trident
HYT H5 blue edition, Introduced in 2020, Ref. H02352, Limited edition 25 pieces
Functions
Blue fluidic hours
Minutes, seconds, power reserve
Dial
Anthracite neoralite hour ring with white Super-LumiNova®
Anthracite hour flange with white numerals
White Super-LumiNova® rail under the capillary
Minute counter with black index and numerals, black minute hand with white Super-LumiNova®
Seconds flange with black hand
Power reserve flange with black hand
Strap
Grey rubber, titanium folding buckle
HYT H5 red edition,Introduced in 2020, Ref. H02248, Limited edition 25 pieces
Functions
Red fluidic hours
Minutes, seconds, power reserve
Dial
Anthracite neoralite hour ring with white Super-LumiNova®
Rhodium hour flange with black numerals
White Super-LumiNova® rail under the capillary
Minute counter with black index and numerals, black minute hand with white Super-LumiNova®
Seconds flange with black hand
Power reserve flange with black hand
Strap
Red rubber, titanium folding buckle, anthracite DLC coating
HYT H5 green edition, Introduced in 2019, Ref. H02351, Limited edition 25 pieces
Functions
Green fluidic hours
Minutes, seconds, power reserve
Dial
Neoralite hour ring with Cool Grey 9c Super-LumiNova®
Hour flange with black numerals
Black Super-LumiNova® rail under the capillary
Minute counter with black index and numerals, black minute hand with C7 Super-LumiNova®
Seconds flange with black hand
Power reserve flange with black hand
Strap
Grey rubber, titanium folding buckle
HYT H5 black edition, Introduced in 2019, Ref. H02353, Limited edition 25 pieces
Functions
Black fluidic hours
Minutes, seconds, power reserve
Dial
Neoralite hour ring with C7 Super-LumiNova®
Hour flange with green numerals
C7 Super-LumiNova® rail under the capillary
Minute counter with black index and numerals, black minute hand with C7 Super-LumiNova®
Seconds flange with black hand
Power reserve flange with black hand
Strap
Black rubber, titanium folding buckle