HYT WATCHES – H4 Neo Blue – Ref.: 512-TD-67-BF-RN; Limited Edition 50.



Enlightened. Energized. Polarized.

Dissolving apparent contradictions drives HYT. The latest H4 watches shed even more light on this intrinsic fascination with making the paradoxical meaningful. These colorful new timepieces remain loyal to the brand’s fil rouge of showcasing the power of the past and future to assign the present context and content. At the same time, they add a striking new dimension to the combined energy of two potentially polemic opposites – light and liquid – with the smallest dynamo ever invented, patent pending. There’s an instant of tension when creativity succeeds in replacing an enigma with enlightenment. The new H4 watches were born of such a moment.

HYT is a master of directing relevant encounters between art and science, bringing together horology with fluidics by visualizing time’s passage with immiscible liquids. The H4 builds on this foundation to explore the tension between day and night, mindful that time’s flow never sleeps. Illumination comes from the first mechanical source ever designed for an haute horlogerie complication. The exploration of new territories in miniaturization and component curvature enabled the in-house development of a micro-generator. This sources light from two LEDs without any support from electronics or batteries.

Bauhaus boldness enlivens a canvas of black and silver metal components in four eye-catching H4 limited editions. Three focus on red, green and blue respectively. A fourth family member adds a touch of yellow to these in a stunning multicolored statement. As the fluorescent nano-particles in the transparent composite dials catch the light, each of the surface’s tiny perforations transforms into a light source in itself. Adding its signature to the paradoxical perfection of these timepieces is the seamless combination of an exclusive mechanical movement and patented fluidic module. Even the bi-material strap in rubber and technical fabric shows that opposites attract, act and interact.

1 in stock






  • Blue fluidic hours
  • Minutes, seconds, power reserve


  • Titanium, black DLC coating, micro-blasted and satin-finished
  • Diameter: 51 mm
  • Height: 17.9 mm
  • Titanium screw-down crown, black DLC coating, black rubber-clad
  • Titanium push-button crown, black DLC coating, blue rubber-clad
  • Titanium dome, black DLC coating
  • Domed sapphire crystal with anti-reflective coating
  • Screwed case back, sapphire crystal
  • 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


  • Mechanical with manual winding, exclusive HYT caliber
  • 28,800 Vph, 4 Hz, 35 jewels
  • Beveled bridges adorned with Côtes de Genève decorations
  • 65-hour power reserve


  • 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

White light mechanical module:

  • Winding function using the push-button crown
  • Light activated by pressing the push-button crown
  • Dial lit by two LEDs located under the dome and powered directly by a micro-generator


  • Rhodium-plated and sand-blasted hours flange with white numerals
  • Transparent composite dials loaded with fluorescent nano-particles; blue and red indexes and numerals
  • Blue minute hand, white Super-LumiNova®
  • Bracelet: Black technical fabric with blue top-stitching, titanium folding buckle, black DLC coating

Ref.: 512-TD-67-BF-RN; Limited edition of 50 pieces