UR-100v LightSpeed Ceramic
"Wearing this is like carrying a fragment of the universe on your wrist," — Martin Frei, Co-founder
The UR-100V LightSpeed doesn't just tell time—it tracks the journey of photons across our solar system. When the wandering hour satellite completes its 60-minute arc across the dial, it transforms into a cosmic marker, tracing how long sunlight takes to reach each planet.
The Scale:
Mercury: 3.2 min
Venus: 6 min
Earth: 8.3 min
Mars: 12.6 min
Jupiter: 43.2 min
Saturn: 79.3 min
Uranus: 159.6 min
Neptune: 4.1 hours
A planetary hand completes one rotation every three hours, dipping beneath the minutes track at Saturn and resurfacing at 9 o'clock. The effect is mesmerizing—light's constant velocity rendered visible through mechanical translation.
The Case: Ceramic, Re-engineered
Traditional ceramic shatters. URWERK's composite doesn't. Developed using aerospace and medical laser technologies, the white case layers ceramic fibers with glass fiber (silver tones) and carbon inserts in a polymer matrix. Machining reveals stratified depth; light plays across surfaces that shift between matte and luminescent.
The white isn't arbitrary. As Frei notes: "White ceramic and white light meet—both forms of energy revealed through their surface." The 43 × 51.73 × 14.55mm case wears surprisingly compact despite the visual volume.
The philosophical weight is real—every glance at your wrist reminds you that you're seeing the past, not the present. The star whose light reaches you may have died millennia ago.
Technical Specification
Case
Materials: Proprietary white ceramic composite with silver fibreglass and carbon inserts; DLC-treated Grade 5 titanium caseback (sand-blasted, shot-blasted)
Dimensions: 43 mm × 51.73 mm × 14.55 mm
Crystal: Sapphire front and display caseback
Water Resistance: 5 ATM, screw-down crown
Movement
Calibre: UR 12.02 automatic, governed by Windfänger air-resistance turbine
Frequency: 28,800 v/h (4 Hz)
Jewels: 40
Power Reserve: 48 hours
Materials: Satellite hours in aluminium on beryllium-bronze Maltese crosses; aluminium carousel; triple ARCAP alloy baseplates; titanium inner container; black PVD-treated aluminium rotor
Finishing: Circular graining, sandblasting, shot-blasting, circular satin finish; chamfered screw heads; Super-LumiNova on hours and minutes
Indications: Wandering satellite hours; minutes; light-travel times to Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune
Strap: Textured rubber with folding clasp (white and black straps included)
Price: HKD $670,000
Limited edition of 15 pieces