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UR-100 / UR-100V SpaceTime

The URWERK UR-100 SpaceTime is the watch that put URWERK on a lot of wrists that had never worn an independent before. It landed in 2019 at CHF 48,000, a 41mm satellite-hours machine that reads time the way URWERK always has, then does something no other watch does: it shows you how far you have moved through space while you were reading it. When the minute pointer finishes its arc and disappears at the bottom of the dial, it reappears on two curved scales. One counts off 555.55 km, the distance a point on Earth's equator travels by rotation every 20 minutes. The other runs to 35,740 km, the distance Earth covers orbiting the Sun in that same 20 minutes. We sit on 47th Street and we see a lot of complicated watches cross the counter. The UR-100 is one of the few that makes a first-time buyer stop talking. It is compact for an URWERK, wearable in a way the UR-110 and UR-210 never were, and it opened the brand up to collectors who wanted the satellite-hours signature without a slab of metal the size of a garage-door remote on the wrist. If you are buying your first URWERK or selling one you have owned since launch, this is the reference to understand cold.

Specifications

ModelURWERK UR-100 SpaceTime (2019) and UR-100V (2020 onward)
Case Size41mm wide, 14mm thick, 49.7mm lug to lug (43mm for the UR-100V Lightspeed variants)
Case MaterialsTitanium and steel construction across most editions, with limited runs in black DLC titanium, gunmetal titanium, yellow gold, Electrum gold-silver alloy, textured bronze, blue PVD steel, violet DLC t…
MovementAutomatic. Caliber UR 12.01 in the original UR-100 (Zenith Elite base), replaced by Caliber UR 12.02 in the UR-100V from 2020 to 2022 onward (Vaucher Manufacture base)
BaseplateARCAP, a copper-nickel-zinc alloy that contains no iron and is non-magnetic
Frequency28,800 vph (4 Hz)
Jewels39 jewels
Power Reserve48 hours
Winding SystemAutomatic, regulated by URWERK's Windfänger air-turbine system that dampens rotor speed under aggressive wrist motion
Water Resistance30 meters (3 ATM); 50 meters on the Lightspeed models
DisplaySatellite wandering hours with three arrow-tipped aluminium satellites on a central carousel; the active hour satellite sweeps a 0 to 60 minute arc, then the pointer reappears on the ROTAT (555.55 km …
CrystalSapphire
Production RunRoughly 20 distinct UR-100 and UR-100V variants produced as of 2026, most limited to 25 pieces or fewer per edition

History

Iconic References

Buying Guide

Pricing & Market Data

Cultural Significance

Collector's Lore

The nickname collectors hung on the yellow-gold UR-100 is 'C-3PO,' after the gold Star Wars droid, a fitting tag for a watch built around space and orbit. The whole SpaceTime concept traces back to a single family heirloom: a Gustave Sandoz regulator pendulum clock made for the 1893 Chicago World's Fair, handed down to co-founder Felix Baumgartner by his father Gerry, a retired clock restorer. That clock showed Earth's rotational distance on scaled tracks, and Baumgartner rebuilt the idea for the wrist. Martin Frei described the UR-100 as URWERK's 'Back to the Future,' a callback to the compact UR-101 and UR-102 the pair built at the end of the 1990s. And the reappearing minute pointer, dead space on every earlier URWERK, is the whole trick here: URWERK gave that idle pointer a second life as an astronomy instrument, which is why owners tend to explain this watch before they explain any other piece in the box.

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