It has distinctive character, undeniable power and represents a deliberate break with traditional watch design principles. A unique piece designed for Only Watch 2011, the Only Watch L.U.C Engine One Tourbillon is powered by an exceptional “motor”, proprietary L.U.C Calibre 1TRM. Machined like an engine block and mounted on silent-blocks, this mechanical hand-wound tourbillon movement was designed, developed and produced at Chopard Manufacture.