Features: 100% brand new and high quality A USB-Powered Ionizer that uses a carbon fiber brush system to emit healthy negative ions into the air. By attaching themselves to air molecules and any impure particles in the air and negatively charge them, The emitted negative ions extremely purify the air and remove toxic substances including the dust,odors and molds,etc. Negative ions can also eliminate static, reduce EMI and help boost your energy and mood. Connects it to your computer, and then the negatives ions will be released into the air consistently! Unique design of the rotatable cover well protects USB lead; Soothing LED light indicates the working of the unit; Specifications: Density of anion: 1 Million / cm³ Rated voltage: DC 5V Rated power: < 0.3W Dimensions: 88 x 21.5 x 21.5mm Color: Black&White Package includes: 1 x USB Ionic Air Purifier