Vicks V790-N Germ Free Humidifier... The Vicks V790 Warm Moisture Humidifier helps provide temporary relief from cough and congestion for better comfort. Also helps you breathe better and sleep more comfortably. UV technology kills up to 99.999% of bacteria, mold, fungus and virus in the water after 2 hrs of continuous use. This provides the assurance that the moisture emitted from the unit is virtually free of germs. Patented Germ Killing Technology kills up to 99.999% of certain bacteria, mold, fungus and virus in the water; Quiet operation; Adjustable moisture control; Medicine cup for use with liquid inhalants; 2.0 gallon water tank; Runs up to 24 hours per filling; Great for medium to large size rooms.