Introducing the HYT H4Neo



In contemporary Haute Horlogerie, HYT stands out as a brand revolutionising time display with their unique mechanical movements using a microfluidic module. Their latest model is the H4Neo is introducing a surprising feature for a mechanical watch, two LED lights! Yes, LED lights in a mechanical watch. The watch is equipped with a microgenerator powered by a barrel spring which can be wound with the crown at 4:30. At nighttime, when this crown is pressed the two LEDs light up, filling the transparent composite dial loaded with fluorescent nanoparticles with a purple light. As you can see from the pictures and the video that will follow the specs, the effect of the purple light and the green fluorescent liquid hour indicator is absolutely striking.



Technical specifications

Functions: green retrograde fluidic hours, minutes, seconds, power reserve

Case: charcoal grey titanium and titanium DLC with micro-blasted finishes
– diameter: 51 mm
– height: 17.9 mm
– rubber-clad screw-down 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

Movement: skeleton mechanical hand-wound movement, HYT exclusive calibre
– 28,800 VpH, 4 Hz, 35 jewels
– bridges hand-bevelled and micro-blasted, rhodium-plated bellows
– 65-hour power reserve

HYT’s exclusive patented microfluidic 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 nanoparticles
– regulator at 12 o’clock
– small seconds wheel at 9:30
– power reserve indicator at 2:30

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

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

More at

As a graphic designer, I'm fascinated by the crossroads between technology and aesthetics. Horology is one of these crafts, where art and engineering come together to produce mechanical wonders that grace the eye. WatchPaper was born from the desire to create an online tool where I can share my passion for watches.