This is the air cleaner that's smaller and lighter than a commuter cup, providing portable air purification that eliminates 99% of viruses. The device sets up unobtrusively on a desktop or fits in a car's cup holder and emits harmless, positively charged hydrogen and oxygen ions that envelop negatively charged viruses and bacteria like H1N1 and MRSA. The hydrogen and oxygen ions penetrate the contaminants' membranes and destroy their DNA, rendering the microorganisms incapable of reproduction and survival. The device also neutralizes allergens, tobacco smoke, and volatile organic compounds (VOCs) emitted by some paint and furnishings. The filterless device eliminates the need to clean or replace costly filters and it produces only 29 decibels of noise--about the same as a whisper. Despite its small size, the air purifier treats up to 231' sq. Plugs into AC and DC with included adapters. 6 1/3" H x 2 1/2" Diam. (4 oz.)