Our Take

Over the years, we’ve been fortunate enough to handle many different Urwerk timepieces. We love how Felix Baumgartner and Martin Frei, Urwerk co-founders, leverage their extraordinary partnership to create extraordinary timepieces. That’s why we’re excited to showcase yet another marvel from the brand: the UR-105 TTH “Tantalum Hull.”

Released recently (May 2021), this timepiece is the final edition of the iconic UR-105 series after a 7-year production run. And it’s going out in style. Using a combination of titanium and tantalum for the timepiece’s case, there is probably no material that has stronger Urwerk “vibes” than tantalum. A matte, blue-ish-gray-ish material, it fits the futuristic aesthetic of the brand exceptionally well. Even when the material posed significant production challenges for the watchmakers. As Martin commented, “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!”

Limited to only 12 pieces, the UR-105 TTH wears extremely comfortably for a timepiece with heft (39.5mm width x 53mm length x 17.8mm height). And it bears one of Urwerk’s emblems, caliber UR 5.03’s convertible winding system. Powered by two turbines to regulate the movement’s automatic winding system, a lever on the caseback allows you to deactivate the automatic rotors, converting the timepiece into a manual wind watch.

Overall, this is a hell of a send-off for the UR-105 series. And with every goodbye comes something new as well. Like everyone else in the watch community, we can’t wait to see what’s next for Urwerk.

The Details

Urwerk UR-105 TTH "Tantalum Hull

Case: 39.5mm width x 53mm length x 17.8mm height - "soap bar" case in titanium and tantalum with hinged protective cover - sapphire crystal - crown at 12 o'clock - caseback with sapphire apertures and automatic winding position lever - water-resistant to 30m

Display: New skeleton carousel with four hour satellites (wandering hours) displaying also a retrograde minute - small seconds and power reserve indications

Movement: Calibre UR 5.03 - automatic base movement with in-house display module - self-winding mechanism regulated by two turbines and three possible positions - 52 jewels - 28,800 vibrations/hour - 48h power reserve - decoration includes perlage, bead blasting, frosting, screw heads with polished bevels

Strap: Vulcarbon rubber strap with black DLC buckle