Description : This is a USB ionizer, emitting healthy negative ions into the air by carbon fiber brush system, effectively remove the air of smoke, dust, allergen, refresh the air. Small and fashion design, rotatable cover, protects USB lead well. Easy to use, insrert it directly to USB port, then enjoy fresh air while playing games. Features : USB power supply, low consumption, energy saving. Light weight, excellent workmanship, can be a nice decoration. Release a lot of negative ions, enhance organism immunity ability, protect your health from bacterium, dust, smoke etc. Specification : Color: Blackandwhite Interface : USB Density of Anion : 1 Million or cm 3 Air quantity: 50-150 cubic meters or hour Applicable range: Below 10©O Rated Voltage : DC 5V Rated Power : < 0.3W Size : 89.5x21.5x21.5mm Weight : 22g Package Includes : 1 x USB Ionic Air Purifier