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UR-105

The URWERK UR-105 is the watch that made a lot of collectors take independent horology seriously without a six-figure ask. It landed in 2014 as the more wearable, more affordable cousin to the sci-fi UR-110 and the towering UR-202, and it did it with the same trick that put URWERK on the map: no hands, no conventional dial, just a rotating carousel of four hour satellites dragging a minute track across an arc at the bottom of the case. Geneva founders Felix Baumgartner (movement) and Martin Frei (design) built the 105 around a 39.5mm to 53mm case they call the soap-bar, or hull, a machined block with a hinged protective cover you flip open with a sliding tongue on the side. We buy and sell these across the counter at 19 W 47th Street, and the honest read is that the UR-105 is the single best entry point into URWERK on the pre-owned market right now. If you want the wandering-hours experience with the brand's real in-house build quality but you are not ready to write a check for a UR-100V or a UR-220, this is the reference to hunt. Bring a candidate in and we will price it against what these actually trade for, not what a boutique wishes they still cost.

Specifications

Collection Years Produced2014 to 2021
Display TypeSatellite wandering hours with retrograde-style minute track (four rotating hour satellites on a carousel, minutes read on a 60-minute arc)
Case Size39.5mm wide, 53mm long (lug tip to lug tip), height varies 16.65mm to 17.8mm by generation
Case MaterialsTitanium (most versions, often AlTiN or PVD coated), stainless steel bezels on select refs, hand-patinated bronze (T-Rex), tantalum bezel and cover (Tantalum Hull), 18k red gold bezel on one TA varian…
Water Resistance30 meters (3 ATM) across the collection
Crown Winding SystemCrown at 6 o'clock; hand-wound on the UR-105M, self-winding via twin regulating turbines on the UR-105 TA and CT
CalibersUR 5.01 (hand-wound, UR-105M); UR 5.02 (automatic, UR-105 TA); UR 5.03 (automatic, UR-105 CT)
Frequency28,800 vph (4 Hz) across all calibers
Power Reserve42 hours (UR-105M) to 48 hours (TA and CT)
Jewels38 jewels (UR 5.01); 52 jewels (UR 5.02 and UR 5.03)
Notable ConstructionCarousel and triple mainplate in ARCAP alloy; hour satellites in aluminum on most refs and beryllium bronze on the T-Rex; Geneva cross gearing; twin aluminum turbines under the caseback act as a windi…

History

Iconic References

Buying Guide

Pricing & Market Data

Cultural Significance

Collector's Lore

A few things collectors trade notes on. First, the turbines under the caseback on the TA and CT are not decoration; they are an air-friction governor that slows the automatic winding rotor to prevent over-winding wear, and the selector lets you dial winding efficiency from FULL to REDUCED to STOP. It is one of the more genuinely functional visual gimmicks in modern watchmaking. Second, the Clockwork Orange nickname on the TA is a direct Kubrick reference, in keeping with Martin Frei's long habit of building URWERK's design language out of science fiction and cinema. Third, the T-Rex hobnail bronze case was never meant to stay pristine; URWERK expected each of the 22 pieces to develop its own patina from the owner's skin and wear, so no two are identical, which is exactly why collectors chase specific examples. Fourth, the UR-105 traces a lineage straight back to a 17th-century night clock the Campanus brothers built for Pope Alexander VII, the same wandering-hours idea URWERK revived in 1997. The 105 is where that 350-year-old concept got small enough and affordable enough to become a lot of people's first serious independent watch.

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