The Vornado 633DC Energy Smart™ circulator is a gives you up to 80 percent energy efficiency with its powerful DC-motor that moves air up to 80 feet. Simple variable speed control gives you precise control of the signature Vortex Action creates whole-room circulation, keeping the entire room cool and comfortable. Plus, the 633DC is backed with an industry-leading 10-year satisfaction guarantee. Whole room Vortex circulation Energy-saving brushless DC motor Variable speed control Powerful airflow,  moves air up to 80’ Ultra-quiet operation Multi-directional airflow Sleek, stylish design 10-year warranty 8.65x12x13.75" 4.94 lbs. Features: Ac Power, Cooling Voice Activation: No Voltage (volts): 120v Maximum Temp (f): 86 Degrees F Control Types: On/Off Switch Country of Origin: Imported