Description: Humidifier: 220ml water tank USB humidifier, put water in the humidifier tank, switch Low noise: this desk humidifier low noise, it will not disturb you when working or sleeping even at night.Night colorful night light: night light for little kids who are afraid of the dark before sleeping, soft lighting creates a pleasant sleeping environment. USB humidifier: two spray ways, 4H continuous spray, 8H intermittent spray, USB cable is convenient for charging. A wonderful companion for hotel, car, office or household. Application: great for bedroom, car, children's room, kindergarten and office. Specification: Material: ABS, electronic components Capacity: 220ML Spray volume: 35-45 ML/HP Working current: DC 5VM Power: 2W Working current: 300mA Size chart: Approx. 9.9cm x 7.8cm x 11.2cm/3.90in x3.07in x4.41in Package includes: 1 humidifier 1 USB cable 1 manual Note: It is recommended to replace the cotton core every 2 months