The Urwerk UR-112 Aggregat offers fully digital time displays. The hours and minutes are displayed on triangular prisms that appear to levitate inside two transparent cylinders on the front of the watch. The digital hour display is on the left. On the right, the same system displays the minutes, which jump in five-minute increments.
Night finally enfolds the city. It is at this precise moment that the UR-220 SL Asimov's hour satellites glow as they gently emit the light stored up during the day. Like phosphorescent photons, molded Super-LumiNova satellites enliven the baseplate of the UR-220 SL Asimov, giving light to the night.