This cool Air Humidifier has a vivid colorful Cycling light setting creates a peaceful ambiance while delivering a soothing mist. It offers maximum relaxation for you. The night light could improve your sleeping quality. The portable USB humidifier is very easy to operate, One button controls all functions, you simply need to press the power button every 1 second to control the mist. Keep pushing power button for 3 seconds to enable the night light and colorful light function. Portable and small design is very easy for you take to anywhere. The USB Power Supply compatible with any device USB port which ensures it can be used in bedroom, office, car.