... could be well used by connecting it to the computer with USB cable, even you are in the office, you ... Air Purifie combines TiO2 photocatalyst, activated carbon filter, high concentration negative ion.-Adsorbing harmful gas, smoke, dust, particulate, volatile organic compound and ... is a kelly color LED indicater when it is on.-With on/off switchSpecification:Working enviroment: 0°C~40°CDimension:80 ...