DESC: Healthier living is here to stay. The Vicks Ultrasonic Humidifier produces a superfine, cool mist to restore moisture to dry indoor air for easier breathing and a good night's sleep. Perfect for your child's room to alleviate congestion caused by colds and flu, its features include variable mist control and directional mist outlet, plus up to 20 hours of operation per filling. Whisper-quiet function reduces static electricity throughout your home without anyone knowing it's on.