Mastar 200ml USB Portable Humidifier with Led Light USB Mini Humidifier with Led Light, ease dry eyes, eliminate static electricity, reduce radiation Touch control for power on/off and will display colorful light when working Can easily be attached to the air-conditioning vent of a car, ideal for your car, office and home PET material Eco-friendly, and you can see the water level clearly from the bottle Please use pure water to protect the humidifier, avoiding to use essential oil or other chemical corrosive substances