Vornado 610DC Energy Smart Medium Air Circulator Fan with Variable Speed Control Energy-efficient, brushless DC motor with high torque at low speeds True variable speed settings that allow for precise airflow control Signature Vortex technology provides complete air circulation throughout a room Moves air up to 80 feet and head tilt adjusts a full 95 degrees Assembled in the USA and backed by a 10-year satisfaction guarantee Built to meet U.S. voltage requirements. Certified, safety-tested, and warrantied for use only in the U.S.