The 733DC is one of the most powerful in Vornado's new Energy Smart circulator family. Combining a sleek style with a more-powerful airflow (up to 100'), the brushless DC motor uses up to 80% less energy, bringing modern efficiency to the home. A return to variable speed settings puts you in precise control of your environment. The 733DC conveniently circulates the air from three different base positions. Complete with our 10-year promise, these DC circulators will keep you comfortable for years (and years) to come. IMPORTANT INTERNATIONAL DISCLAIMER: This item is built to meet U.S. voltage requirements and may not function properly when used in conjunction with external devices that alter or convert voltage or frequency of electricity. Improper use or shipping the product outside the U.S. will void all warranties.