COOL MIST HUMIDIFIER: The PureGuardian H3200WAR ultrasonic cool mist humidifier guards against dry air in the home, perfect for those with colds, allergies and dry skin. The easy fill 1.5 gallon tank covers 440 sq. ft. rooms and runs up to 100 hours on low speed ULTRASONIC TECHNOLOGY: The H3200WAR disperses a soothing, cool mist into the air and is ultra-quiet, making it ideal to have on while you sleep. A smart mist sensor monitors the level of humidity in the room and adjusts to your selected level LOW WATER INDICATOR & AUTO SHUT-OFF: When the humidifier is low on water the Refill LED on the front panel will light up, and the unit will shut off. Simply add more water to continue use. The humidifier will automatically resume running when water tank has been refilled AROMATHERAPY TRAY: Aromatherapy essential oil tray helps create a relaxing environment. Oils are not included. Create a better home environment and optimize your comfort with an ultra-quiet, soothing cool mist. 1 essential oil pad included ADDITIONAL FEATURES: Easy to use variable 3-speed mist control, night light feature, 12-hour timer, multi-directional mist, refill indicator