After laying the foundations of the S1 in 2025 with three models, HYT opens a new chromatic chapter of its hydromechanical sports line. The S1 Beadblasted Titanium Blue joins the permanent collection, while two timeâlimited MillÃĐsime Editions â S1 Titanium DLC Red and S1 Titanium Orange â complete the trio as three distinct expressions of energy built on the same technical theme.
In line with the âMillÃĐsime Editionâ philosophy inaugurated on the T1 Series, the S1 Titanium Orange and S1 Titanium DLC Red will be produced only for a defined vintage, from Watches and Wonders 2026 until April 2027, while the S1 Beadblasted Titanium Blue remains a permanent model.
Colour here is not only an emotion, it is also a moment in time. Without touching the radical architecture of the 501âCM calibre or the ergonomic titanium case, the S1 shifts emotional gear: colour becomes language, the fluidic display turns into a beam of light on the wrist.
A collection in motion, not a rupture
From day one the S1 was conceived as an evolving platform: an athletic chassis, a patented hydromechanical engine, a case shaped for performance and, around this trio, an infinity of possible âliveriesâ. In 2025, the DLC Blue, the historical HYT fluid Green and the Red on beadblasted titanium set the codes: strong contrast, extreme legibility, unapologetic sportiness.
In 2026 HYT does not seek a stylistic revolution but a refined stepâup â like a race car that, season after season, optimises its aero package without betraying its DNA. The structure of the S1 remains intact, yet colours move closer to the movement, invading the case inserts, dial details, hands and straps. The result is three sharply distinct personalities, tied together by the same hydromechanical signature but speaking to very different temperaments.
Narrative axis: from light to flow
At HYT, colour is never a cosmetic afterthought; it is an extension of the notion of flow. The liquid marking the hours, the surface treatments of the titanium, the SLN that takes over in the dark, all speak the same language of circulating energy.
Blue, red and orange are therefore not three shades dropped on an existing product but three ways of inhabiting time:
- blue for depth and continuity, the horizon line of time unhurried;
- âred for intensity, the redline of the rev counter where you deliberately linger.
- orange for impact and immediacy, the splitâsecond when everything accelerates;
âBy playing with case inserts, decals, SLN and toneâonâtone straps, HYT turns the S1 into a genuine âcolour streamâ: one architecture, traversed by three deliberate chromatic currents.
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S1 MillÃĐsime Editions, timeâlimited, not quantity limited
Echoing HYTâs T1 âMillÃĐsime Editionâ concept â where the T1 Titanium Green, T1 Titanium Purple and T1 5N Gold Titanium Chocolate were available only from September 2024 to April 2025 â the S1 Titanium Orange and S1 Titanium DLC Red are likewise defined by their production window rather than a fixed number of pieces. Available only from their debut at Watches and Wonders 2026 until April 2027, these two colourways form a specific S1 vintage, after which no further examples will be manufactured. The S1 Beadblasted Titanium Blue, by contrast, anchors the collection as a permanent reference.
The S1 Beadblasted Titanium Blue is calm at full speed, control at the heart of action. Its beadâblasted silverâandâblack titanium case visually lightens the mass and softens the edges of the design while diffusing light in a soft, almost velvety way. Against this mineral backdrop, the blue fluid running through the borosilicate capillary seems to float in zero gravity, a neonâlike line above an open worked movement treated in shades of grey.
âThe blue rubber strap extends this impression of continuity, as if the liquid were escaping the tube to flow along the lugs. The contrast between the blue fluid, rhodiumâplated indications and white SLN on the hands delivers outstanding legibility day and night, while keeping the watch more understated than demonstrative. This is the S1 for the collector who wants to live with hydromechanical time every day without shouting about it.
The S1 Titanium DLC Red takes the S1âs sporting attitude to its highest tension. The case is dressed in deep black DLC like a technical armor, into which a red ceramic-coated trim is set, echoing the red liquid that tracks the hours.
âThis dialogue between absolute black and saturated red continues on the dial, with white and red decals and matching SLN on the hands creating a true theatre of contrast where every indication jumps out effortlessly. The red rubber strap turns the watch into pure adrenaline instrument, as much a âheartbeat counterâ as an hours indicator.
âBehind the scenes, the handâwound 501âCM calibre remains the same 352âcomponent power plant as in previous S1s, with bellows whose walls are just one quarter of a human hairâs thickness, a 72âhour power reserve and a frequency of 28,800 vibrations per hour. Under this blackâandâred livery it looks more ready than ever to cope with the accelerations of those who choose to live in the red zone.
Orange is the colour of starting lights, racing overalls and sunsets that suddenly tip into night. HYT makes it the incandescent thread of the new S1 Titanium Orange. Here, the satinâfinished titanium case plays a taut dialogue between silver metal and an orange ceramic-coated trim insert forming a luminous belt around the dial.
âOn this stage, the black liquid gliding through the capillary stands out like a circuit line against orange kerbs. The dial decals and hands receive orange accents, while matching SLN takes over in darkness, turning the S1 into a wristâmounted beacon. The orange rubber strap, perfectly colourâmatched to the insert, pushes the watch firmly into a racing register.
âThe S1 Titanium Orange is not designed to be shy; it embraces the blaze of a pitâlane timer yet remains true to the S1âs carefully honed ergonomics, whatslightweight case, downwardâsloping case sides, and a robust quickâchange strap system. It is the version for those who want their watch to enter the room a fraction of a second before they do.
The invisible common ground: ergonomics, movement, comfort
Beneath these three chromatic expressions, HYT has kept everything that makes the S1 one of the most singular sports watches on the market. The 45.30 Ã 17.20 mm titanium case, with its ergonomically sloping sides, hugs the wrist naturally; the steep strap attachment angle creates a flowing line and a stable, secure fit, crucial for an instrument built for realâworld activity.
The hydromechanical core
The 501âCM movement, housed in a 50âmetre waterâresistant case, remains HYTâs hydromechanical icon: a borosilicate glass capillary with a 0.8 mm internal diameter, two immiscible liquids whose meniscus acts as retrograde hour hand, aerospaceâgrade bellows and a thermal compensator to keep the display precise across temperature changes. The absence of a full dial saves weight and turns the movement into the main visual focus, its beadâblasted and satinâfinished components interacting with the new 2026 colours.
Straps as engineering
On the S1, even the straps are engineered like hardware, not accessories. Each reference comes with interchangeable rubber straps perfectly colourâmatched to the case and fluid, plus more neutral options, all built on HYTâs dedicated quickâchange system.
Integrated directly into the case middle, this mechanism required a full year of research and development on the T1 before making its way, refined, onto the S1: a discreet pushâbutton on the back releases the strap with a click, while solid titanium (often DLCâcoated) pin buckles lock everything down on the wrist. The straight, tapered geometry of the straps follows the natural curve of the wrist, so you can swap from stealthy to fullâcolour in seconds without sacrificing comfort or security â very much the HYT way of treating ergonomics as pure engineering.
Fluidic time, explained
Behind the colour show, the S1 still runs on HYTâs favourite bit of âmad scienceâ: its patented fluidic time display. HYT watches combine science, technology and haute horlogerie in a mechanism built around two flexible bellows at 6 oâclock, connected to each end of a glass capillary tube.
One bellow pushes a coloured liquid, the other a transparent one; because the two fluids are immiscible, the repulsive force between their molecules creates a crisp meniscus â a moving boundary that literally becomes the hour hand as it glides around the dialâs periphery. Driven by the mechanical 501âCM calibre, one reservoir compresses while the other expands, sending the liquids back and forth through the capillary; over twelve hours the coloured column advances, then, at 6 oâclock, snaps back in a retrograde motion to start a new cycle.
Protected by seven patents and honoured with the Innovation Prize at the Grand Prix dâHorlogerie de GenÃĻve in 2012, this fluidic engine still feels deliciously experimental â except that after more than a decade of refinement, it behaves with the predictability of a thoroughly overâengineered machine.
