The Crane Drop Ultrasonic humidifier has a 360° mist nozzle that disperses up to 2.3 gallons of moisture per day. It offers great relief from cold and flu symptoms, nasal congestion, dry cough, sinus irritation, nose bleeds, chapped lips and dry skin. The Crane Cool Mist humidifier uses ultrasonic technology to add moisture to dry air. This compact humidifier can be used in small rooms ranging from 100 to 300 square feet. The removable water tank holds up to 0.9 gallons of water and has a refill indicator. It operates quietly and uses less energy than a standard household light bulb.