This is the air-purifying desk lamp that eliminates up to 99.99% of viruses, allergens, and bacteria. A built-in fan and vents at the base of the lamp disseminate harmless hydrogen and oxygen ions that envelop positively charged viruses and bacteria like Influenza, Staphylococcus aureus, and MRSA. The hydrogen and oxygen ions penetrate the pathogens' 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 unit does not require a filter, its two-speed fan won't rustle papers on a desk, and it treats up to 175' sq. The lamp's 42 LEDs cast bright, white light that is equivalent to the illumination produced by a 75-watt incandescent bulb. The lamp has a three-level dimmer and tilts for custom light projection. LEDs last up to 50,000 hours. Plugs into AC. 17" H x 2 1/3" W x 2" D. (3 1/3 lbs.)