Ionic Desktop Air Purifier, negative ions car home dual-use air cleaner, Mini Air Cleaner for for Small Bedroom and car, USB jack Voltage: DC 5V / 12V.24V, current: 500500MA, power: 5W, Effective area: 20 sq m AREA, Amount of negative ions: 6,000,000 PCS / cube CM Operation is simple, just press the ON / OFF button / operating mode button once the LED is lit, which means it works Powered by mini USB cable, connected with computer or power bank, No perfume Quiet air purifier with Recommended for rooms up to 20 sq m (4m x 5m), like computer room, car inside, Children's room. Professional negative ion generator, unique honeycomb structure, fast active adsorption dust.