About this item 【Portable Mini Humidifier】This mini humidifier is small in size, light in weight, easy to carry, ultra-quiet, and powered by a USB cable. Suitable for travel, bedroom , office, car, humidify your living space and prevent the air from drying out. 【Quiet ultrasonic operation】ultrasonic humidifiers generate an almost silent frequency of 30-40 dB (quieter than a library) and ensure particularly quiet operation. This humidifier will not disturb you when sleeping and working. It can effectively moisturize dry skin and helps reduce skin peeling. 【Two Spray Modes and Automatic Shutdown】This humidifier has two spray modes: continuous mode and intermittent mode. In continuous mode, it will automatically turn off after 4 hours. In intermittent mode, it will automatically turn off after 6 hours. It will shut down when the water level is low. 【Vivid and Colorful Circulating Lights】This cool mist humidifier features a Vivid colorful cycling light setting that creates a peaceful ambience while providing a soothing mist. It offers maximum relaxation for you. The night light may improve your sleep quality. 【One-button control】the portable USB humidifier is very easy to use. One button controls all functions. All you need to do is press the on/off button every 1 second to control the mist. Press and hold the power switch for 3 seconds to activate the night light and the colorful light function.USB Only: Without battarry. The USB is compatible with the USB port of any device.