The Sharper Image Breathe Air Cleaner with Nano Coil Technology uses a triple filtration and elimination process that reduces airborne viruses and bacteria and removes 99% of airborne contaminants like allergens, smoke, pollen, dust, and germs. It is five times better than HEPA in cleaning microscopic particles down to 0.05 microns in size and seven times more effective at cleaning surfaces than comparable HEPA towers. But the Breathe weighs 50% less than comparable HEPA towers and uses only 25 watts of power, also less than half of a comparable HEPA tower. LED backlit control panel and included remote control make operation simple, and a cleanable, replaceable filter lasts up to 18 months. 120 CADR.