Ships from Hong Kong. It is a very lovely mini protable USB humidifier. Wet your room's air and makes you breath comfortably. Increases air moisture for easier breathing and relieve of cough, cold, and flu as well as dry skin symptoms. Suitable for home, office, car and so on. It will be automatically turned off after 4 hours. Dimensions: the diameter of the bottom is 5.5cm, the height is 18cm.