URWERK’S new Tantalum Hull is the last edition of the UR-105 CT and ends the 105 collection in style. Tantalum is precious, rare, and extremely painful to machine and finish.
Limited to just 12 pieces, UR-105 TTH – “TTH” stands for Tantalum Hull is a beautiful object, substantial and pleasing to hold. Its distinctive octagonal form features deep streaks along its entire length. It is angular, geometric, and symmetrical with strong influence from the Art Deco style.
“At URWERK we took radical decisions very early on: deciding to remain independent at all costs and limiting our growth despite all the advice to the contrary were among the most important. To continue staying true to ourselves, to remain URWERK, we make less than 150 pieces per year. This means that we reluctantly have to ‘kill’ a collection to bring a new creation to life. And time for the UR-105 CT is now running out.”
Felix Baumgartner, Co-Founder, URWERK
Activating the sliding “tongue” of the UR-105 TTH opens the hull to reveal its mechanics, featuring a satellite time indication built on a new skeleton carousel. The latter supports four hour satellites, each displaying three hour numerals that rotate in turn along the minute track, providing both analog and digital time displays.
“Tantalum is a very special metal. Its name comes from Tantalus, one of Greek mythology’s bad boys. Tantalum is precious, rare, and extremely painful to machine and finish. We made an UR-110 out of tantalum a few years ago – a first that almost was the last. The team made me promise never to use it again because tantalum ‘eats’ our CNC machines’ bits. It destroys them, reducing their life by a factor of three. But I love its blue-gray luster. Pure magic!”
Martin Frei, Co-Founder, URWERK
On the back, two turbines regulate the movement’s automatic winding system, which can be easily adjusted using a small lever according to how active the wearer is. In the “FULL” position, the slightest movement of the wrist is enough to wind the mainspring. In “STOP” mode, the automatic winding system is deactivated and the UR-105 is manually wound. A third intermediate position, “RED” (for REDUCED), moderates winding to minimise excessive tension and wear.
Technical Specifications:
UR-105 TTH (Tantalum Hull) – Limited edition 12 pieces
| Movement | |
| Caliber: | UR 5.03, automatic winding regulated by twin turbines |
| Jewels: | 52 |
| Frequency: | 28,800vph / 4Hz |
| Power reserve: | 48 hours |
| Materials: | Satellite hour Geneva crosses in beryllium bronze; skeletonized carrousel in aluminum; skeletonized nickel-phosphorus LIGA digital seconds; carrousel and triple mainplate in ARCAP |
| Finishing: | Perlage, bead blasting, frostingScrew heads with polished bevelsHours and minute indexes hand-painted with Super-LumiNova |
| Indications | Satellite hours; minutes, digital secondsPower reserve |
| Case | |
| Material: | UR-105 CT “soap bar” case in titanium and tantalum |
| Dimensions: | Width: 39.5 mm; length: 53mm; height: 17.8 mm |
| Crystal: | Sapphire crystal |
| Water resistance: | Pressure tested to 30 m / 3 ATM |
| Strap: | Vulcarbon© rubber reference “Kiska” with black DLC buckle |
| Price | CHF 77,000 (Swiss francs, excluding tax) |
For more information please visit https://www.urwerk.com