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Skull 48.8: A poignant reminder to make the most of life!

The Skull has been an iconic HYT timepiece since 2015. Its boldness pushes the boundaries for a brand that stands out from the crowd, starting with its fluid time display. Every feature of the Skull is designed to act as a "memento mori", a reminder that life is short and you must seize every moment. It is a symbol of life rather than of death. Just like the fluids which, driven by two flexible reservoirs, progress inside the capillary to mark the passage of time. Without liquid, no life is possible. There would be no timekeeping either: this process began with the first water clocks (or "clepsydras"), over three thousand years ago. As a 21st-century clepsydra, the HYT is a philosophical instrument. Even more so when it takes the form of a bold skull with hollow eyes.

A new model has now been added to the collection: The Skull 48.8. The case has been slimmed down from 51 mm to 48.8 mm, perfect for more slender wrists. The skull is patinated, a finish designed to enhance it as it ages. The patina grows with every passing second measured by the HYT device. More specifically, measured by the capillary, which hugs the outline of the skull – a feat of glass engineering. 

A watch adorned with a skull. One might think this just another passing trend. But this would be to forget that the watchmakers who created the first portable timepieces, in the sixteenth century, at the height of the artistic genre of "memento mori", immediately recognised the significance of the symbol. Make the most of your time, friends, for life is short. 

The case for the the Skull 48.8 is made from 5N pink gold. The hours are indicated on the outer bezel. The external dial boasts a magnificent grained effect thanks to its microblasted treatment. The strap is made from matte black alligator.

Technical specifications

Skull 48.8


  • - Black fluidic hours
  • - Seconds, power reserve


  • - Pink gold (5N)
  • - Diameter: 48.8 mm
  • - Height: 17.9 mm
  • - Pink gold (5N) hour bezel
  • - Pink gold (5N) screw-in crown, sheathed in black rubber
  • - Pink gold (5N) crown guard
  • - Pink gold (5N) screwed offset lugs
  • - Pink gold (5N) dome
  • - Domed sapphire crystal with anti-reflective coating on the dial side
  • - Pink gold (5N) screw-on case back, sapphire crystal 
  • - Water-resistant up to 100 metres

Exclusive patented micro-fluidic module:

  • - Borosilicate glass capillary tube, interior nano-coating
  • - Multi-layer metal bellows
  • - Two immiscible liquids; one transparent, the other coloured with a high performance dye
  • - Thermal compensator with dedicated bellows and specific liquid
  • - High-tech ceramic fluidic restrictors


  • - Mechanical with manual winding, exclusive HYT calibre
  • - 28,800 Vph, 4 Hz, 35 jewels
  • - Bridges hand-bevelled and adorned with Côtes de Genève, rhodium-plated bellows
  • - 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


  • - Pink gold (5N) dial
  • - Patinated skull
  • - Seconds indicator (left eye)
  • - Power reserve indicator (right eye)

Strap: Matte black alligator, pink gold (5N) ardillon buckle 

Product reference: S48-PG-57-NF-RF, limited edition of 50 pieces

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