Features*Packing include:1pc humidifier、1*usb line、2*cotton stick*Multi color optional、4 different colors*Size:7.5cm*12cm*Rated power: 0.3A 5V*Maximum power:2W*Water capacity:300ml*Humidifying capacity:40ml/HR*Use time:6-8 hours*Volume < 35 dB*Best gift for children、friends、or yourself、