This portable mini USB ultrasonic mist humidifier is a must-have for anyone who wants to keep their indoor air quality healthy and comfortable. With its sleek silver color and compact design, it is perfect for use at home or on-the-go. The humidification method uses ultrasonic technology to ensure quiet operation while effectively adding moisture to the air. It is also easy to use and comes with a 5 V voltage requirement. This humidifier is perfect for those who want to keep their indoor spaces healthy and comfortable without sacrificing style or convenience.