H4 Neo

Nothing has changed, except the essential

Innovation within tradition, the DNA of haute horlogerie, the movement heritage, and so on: forget it all. Need a known quantity to hang on to? Good news: the H4 Neo watch tells the time.
The H4 Neo watch is a piece equipped with a light source. Under the dome at 6 o’clock, HYT has concealed two purple LEDs. Once activated, they flood the entire dial with light. At night, the fluorescent colored fluid and the transparent composite dial loaded with fluorescent nano particles are energized by this light source, becoming supremely striking.

At the same time, the wash of light flows into every nook and cranny of the mechanisms, literally bringing this skeleton architecture to life, and defying the laws of watchmaking.
No battery, no electronics are needed for this process, which is fully mechanical. Three factors made it so tricky to develop: the extreme miniaturization, the curved shape, and the fact, once again, that no development of this type had ever been achieved before.

Case :

charcoal grey titanium and titanium DLC with micro-blasted finishes

  • diameter: 51 mm
  • height: 17.9 mm
  • rubber-clad screw-down black DLC titanium crown at 2:30 and at 4:30
  • charcoal grey titanium dome at 6 o’clock
  • convex sapphire crystal with anti-reflective coating on the dial side
  • screw-down sapphire case-back
  • water resistant to 50 metres.

Functions :

green retrograde fluidic hours, minutes, seconds, power reserve

Movement :

skeleton mechanical hand-wound movement, HYT exclusive calibre

  • 28,800 vib/h, 4 Hz, 35 jewels
  • bridges hand-bevelled and micro blasted, rhodium-plated bellows
  • 65-hour power reserve.

HYT’s exclusive patented micro-fluidic module

  • Two multi-layer metal bellows
  • Capillary tube in medical grade glass, with interior nano-coating
  • Two immiscible liquids; one transparent and the other coloured with a highly resistant dye
  • Thermal compensator with dedicated bellow containing a special liquid
  • Ceramic fluid restrictors

Purple light mechanical module

  • rewinding and push-button system with a crown at 4:30
  • the micro generator works when the crown is compressed at 4:30. As soon as the button loosens the light stops working until the full decompression of the additional barrel spring

Dial :

unstructured, fluid hour display

  • luminescent minute, seconds and power reserve dial
  • white Super-LumiNova® minute indexes and numerals
  • black hour dial with white Super-LumiNova® numerals
  • luminescent black minute hand
  • transparent composite dial loaded with fluorescent nano particles
  • regulator at 12 o’clock
  • small seconds wheel at 9:30
  • power reserve indicator at 2:30

Strap :

black reinforced fabric, composed of fire-resistant, water resistant and anti-allergen fibres; sustainably produced; black topstitching; velcro clasp with keeper 


512-TD-65-GF-TS; Limited edition of 15-piece


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