There is watchmaking that tells the time, and then there is watchmaking that challenges how we understand it. The UR-100V ‘LightSpeed’ Ceramic by URWERK belongs firmly in the latter category — a creation that transforms the wrist into a stage for cosmic phenomena.
With the UR-100V ‘LightSpeed’ Ceramic, URWERK moves beyond terrestrial timekeeping to explore a universal constant: the speed of light. Rather than simply marking passing minutes, this watch gives mechanical form to the journey of photons across the solar system, inviting its wearer to reflect on time not as something counted, but as something travelled.
A Cosmic Interpretation of Time
At the heart of the UR-100V LS Ceramic is URWERK’s signature wandering hour satellite display. Traditionally responsible for indicating hours across a minute track, the satellite here takes on a new dimension. Once it leaves the minutes arc, it becomes a cosmic marker — tracing the path of a photon leaving the Sun and travelling outward toward the planets.
Time, in this context, is no longer an abstract human construct. Each indication corresponds to a measurable scientific reality. The watch becomes a mechanical interface between human perception and astronomical truth, translating vast cosmic distances into a format that can be read at a glance.
Light itself is not treated as a metaphor. Photons — massless particles of electromagnetic energy — travel at 299,792 kilometres per second. Born in the Sun’s core, they can take thousands of years to escape its dense interior before racing across space to reach Earth in approximately 8.3 minutes. What appears instantaneous is, in fact, delayed. Every ray of sunlight is a memory.
The UR-100V LS Ceramic makes this scientific fact tangible. In addition to its satellite hours and minutes, it features a three-dimensional planetary display depicting the eight planets of the solar system. Each planetary position corresponds precisely to the time required for sunlight to travel from the Sun to that planet. As the wandering hour satellite moves beyond its conventional role, it symbolically charts this photon journey across cosmic space.
A Universe on the Wrist
“Wearing this creation is like carrying a fragment of the universe on the wrist — a miniature vision of the cosmos scaled to human perception,” says Martin Frei, URWERK’s Artistic Director and co-founder.
Master watchmaker and co-founder Felix Baumgartner frames the piece in philosophical terms: “When the light of a distant star reaches us, that star may have long since ceased to shine. What we see is never the present — only a memory.”
The UR-100V LS Ceramic thus becomes a meditation on time’s irreversible nature. It reminds us that what we perceive as “now” is always shaped by delay, distance and memory.
Advanced Materials, Controlled Power
Material innovation reinforces this conceptual depth. The ceramic case represents URWERK’s most advanced exploration of composite engineering to date, combining resilience with a technical aesthetic that reflects the watch’s forward-looking vision.
Inside, the UR-100V LS Ceramic is powered by the automatic UR 12.02 calibre. Regulated by the Windfänger system — an air-resistance turbine that controls winding efficiency and prevents excessive energy input — the movement ensures mechanical stability. Beating at 28,800 vibrations per hour and delivering a 48-hour power reserve via twin barrels, the calibre balances complexity with precision control.
Mechanical Astronomy, Human Scale
The UR-100V ‘LightSpeed’ Ceramic does not attempt to explain the universe. Instead, it performs a more subtle and demanding act: translating an immutable scientific constant into a mechanical experience that unfolds on the wrist.
The URWERK UR-100V ‘LightSpeed’ Ceramic retails for SGD 117,000 (inclusive of tax).
