USB humidifier-- drop aromatherapy essential oils into the water to produce aroma, relax your through aromatherapy, and let you sleep well all night. Portable humidifier-- you can give it as a gift to your friends, and they will be very happy. Household humidifier-- with a night light, it can provide you with gentle lighting at night. Light humidifier-- when the water level is lower than the touch needle, the humidifier will automatically turn off the power and stop spraying. Essential oil diffuse-- water shortage and power outage protection make it safer.