Qunqi USB Mini Portable Humidifier Air Purifier Freshener Use For Office Home Car Travel Used in:Office,Home,Car.High qulity ABS Material can be connected directly to a laptop, PC, power adapter with USB This humidifier water spray can be turned into 1-5 micron utrasmall particle, will not be any effect for your machine. Fit for who stay in the office for a long time, air-conditioned room, face the computer, huge loss of body water, dry, dust electrostatic situation. Rated voltage: DC5V