Urwerk debuts a Scorpion

The UR-150 Scorpion from Urwerk features a large open-worked hand framing the prevailing hour. The tip of this hand arcs over the minutes track. Once the 60th minute has elapsed, the hours hand jumps to zero and the journey begins anew. At the same time, all the satellite hours spin on their axes and the retrograde hand frames a new hour – all in just 1/100th of a second. A flying carousel bearing the three hour satellites follows a route determined by a cam – a performance that lasts precisely 60 minutes. As the hour hand reaches ’60’, depicted in green numerals, an Urwerk spring triggers the UR-150’s lightning-fast attack: the retrograde hand makes a 240° jump, and the hour satellites simultaneously rotates 270°. The minutes display on the UR-150 is more expansive and more ambitious, moving from the usual 120 degrees to a 240° arc. The retrograde system is achieved using a speed regulator fitted to the UR-150’s flywheel, a mechanism usually employed to regulate the chiming sequence on a minute repeater. Here, it smooths the return of the retrograde hand. The Scorpion is powered by the UR-50.01 with automatic winding system governed by a double turbine and enjoys a 43-hour power reserve.