Vicks Vaporizer with Night-Light and pure steam action for relief of cold and flu symptoms. Vaporizer boils water producing a pure warm steam vapor, which is released into the air. The vapor is bacteria free and leaves no white dust. 1.9 gallon output per day. At least 10 hours operation per filling. Triple wall insulation keeps reservoir water at a safe temperature. Large night light provides added safety and convenience, particularly in children"s rooms.