The Urwerk UR-105 | family history
The UR-105 is as close as Urwerk gets to accessible. The satellite-hours display, air-turbine winding governor, and movement architecture on view through the case are all present, but in a more wearable package than most Urwerk references. If you want to understand what Urwerk does, the UR-105 is where to start.
Urwerk's entry into wearable sci-fi: satellite-hour display in a more compact form than the flagship UR-202/210.
2001-2011 · Urwerk's satellite-hours concept develops
Martin Frei and Felix Baumgartner founded Urwerk in Zurich in 1997 and debuted the satellite-hours display in the early 2000s. The mechanism uses four rotating carriers, each holding three hour numerals; as each carrier completes its arc past 12 o'clock, the correct numeral rotates to face the viewer. The UR-103 and UR-CC1 established the display's operating principles before the UR-105 simplified the case architecture.
No references from this era in the catalog yet.
2012-present · The UR-105 TA (Turbine Automatic)
The UR-105 TA introduced the air-turbine winding governor: two small rotors in the movement regulate the rate at which the automatic winding mechanism transfers energy to the mainspring, preventing over-winding. The mechanism is visible through the caseback and produces a distinctive sound during motion. The TA variant is the most-produced UR-105 configuration and the entry point into the Urwerk collecting conversation.
How to read this family
Two questions for prospective UR-105 buyers:
- Is the satellite-hours display readable in practice? Yes, once you spend ten minutes with it. The current hour numeral is always facing forward at the 12 o'clock position; the minute hand sweeps conventionally. The display is different from anything else, but it is functional.
- What does "most accessible Urwerk" actually mean for price? The UR-105 TA trades in the $50,000-$90,000 range on the secondary market depending on material and configuration. "Accessible" is relative within the Urwerk catalog; the brand's flagship references run well above $200,000. For anyone entering the independent watchmaking world at a serious level, the UR-105 is a genuine starting point.
Related families: Urwerk UR-210
References in this family
Which ref to buy
The UR-105 is Urwerk's "entry point" into the satellite-complication system: rotating cubic hour satellites that sweep around a curved track displaying minutes. The 105 uses the same fundamental display mechanism as all Urwerk watches but in a more compact, wearable case than the larger UR-210 or 220.
- 1Open
UR-105 TA (Turbine Automatic): satellite hour display, integrated turbine rotor that acts as an automatic winding buffer, titanium and steel.
- The case for it:
- The UR-105 TA integrates a turbine rotor that controls winding energy via an air-friction governor — the system prevents over-winding without a slipping clutch. This is original mechanical engineering that exists nowhere else. The satellite display is legitimately hard to explain to someone who hasn't seen it. For a collector who wants mechanical invention rather than mechanical refinement, Urwerk is the correct brand.
- Consider instead if:
- Urwerk secondary market is very thin outside major auction houses. Service requires Urwerk directly, which limits your options as the watches age. These are long-term collecting commitments, not flexible assets.
Rankings last reviewed 2026-06-18. Editorial perspective only. Not financial advice.