URWERK co-founders Felix Baumgartner and Martin Frei have turned a wandering hour satellite into a marker that follows sunlight from the Sun to the planets.
URWERK today introduces the UR-100V LS Ceramic, or ‘LightSpeed’, in a limited edition with a white ceramic composite case developed for the brand.

Alongside satellite hours and minutes, a three-dimensional display shows the eight planets. Each sits at the time sunlight needs to reach it: Earth at 8.3 minutes, Neptune at 4.1 hours. The white case frames a black dial that stands for deep space.
Traditional ceramics can shatter under violent impacts, so URWERK developed its own material. “Thanks to the glass and carbon fibres it contains, our all-new ceramic composite does not break,” says Felix Baumgartner, URWERK’s master watchmaker.
Inside is the automatic calibre UR 12.02, driven by a Windfänger air turbine, with 48 hours of power reserve. It is a quiet engine for a dial built to read like an observatory.

The Basics
- Brand URWERK
- Model UR-100V LS Ceramic (“LightSpeed”)
- Dimensions 43mm wide × 51.73mm long
- Thickness 14.55mm
- Case material White ceramic composite developed for URWERK, with silver fibreglass fabric and carbon inserts; titanium inner case; DLC-treated Grade 5 titanium caseback
- Dial Black; satellite hours and minutes track; three-dimensional planetary display; hands and hours painted in Super-LumiNova®
- Water resistance 5 ATM (50m)
- Strap Two textured rubber straps (black or white); deployant buckle
- Limited edition Limited edition (piece count not given)

The Movement
- Calibre UR 12.02
- Functions Satellite hours; minutes; time for sunlight to reach eight planets
- Winding Self-winding, governed by a Windfänger airscrew; twin barrels
- Power reserve 48 hours
- Frequency 28,800 vph (4Hz)
- Jewels 40
Images courtesy of URWERK.












