Night Light: Humidifiers adopts the design of night light, which can clearly see the water level capacity in the humidifier at night, so as to prevent water shortage and stop working. Relieve Dry: Portable USB cool mist humidifier helps to relieve symptoms such as dry skin and cough. Wide Application: Portable USB cool mist humidifier can be safely used in baby rooms, bedrooms and nurseries. Silent Operation: When cool mist humidifiers works, the sound will not exceed 28 decibels, creating a quiet and comfortable environment for your children. Ideal Gift: Portable USB cool mist humidifier is a gift for children and an ideal gift for family, friends and relatives.