Details Product name: Air Purifier Brand Name: OEM Power Source:Electrical Type:Negative Ion Installation: doubleUSB Power (W):<12W Voltage (V):5 Anion release:8 million PCS/m³ Filter: can be replaceable Air purification process: negative ion + purification Charging Method: Car Cigarette Lighter, home power,office Body size: Φ65 X 154mm