URWERK UR‑230 Black Star Watch
Urwerk's UR-230 comes to a close with the appropriately named Black Star. Its case is crafted from a newly developed composite ceramic with shimmering stellar reflections, which blends in well with the nearly all-black URWERK caliber UR-7.30 movement. Hermetically sealed inside a strongbox-like titanium container, it powers the three-armed carousel, each holding a rotating block with four hours' numerals, while a skeletonized hand points to the minutes. It's also equipped with an "air brake" designed to modulate the winding power according to the wearer's level of activity. The watch sits on a bright green Vulcanized rubber strap and is limited to 35 examples.

