Pursonic HM310 Ultrasonic Cool Mist Humidifier With Built in ionizer & LED Screen with digital Humidity Display Humidifier holds 1.2 gallons of water and produces up to 2.5 gallon moisture output per day.Auto shut off when the tank is out of water.Cool Mist. Built in ionizer which can help purify the air. Ceramic filter to soften and purify the water. LED screen with digital humidity display. 12 hour timer settings. Double mist outlets to keep the mist spread evenly. Provides relief from cough, cold and flu symptoms. Increases air moisture for easier breathing and relieve of cough, cold,and flu symptoms, including nasal congestion, dry cough, sinus irritation, nose bleeds as well as dry skin. Whisper-quite ultrasonic operation runs up to 37 hours on low speed. 360 degree mist nozzle and variable control settings. Ideal for rooms up to 430 square feet. 1 year warranty.