Easy to clean and fill, the Bionaire Top-Fill Ultrasonic Humidifier propels cool, visible mist and runs for up to 60 hours on the low setting to provide comfortable moisture throughout your home. Energy efficient, filter-free, and virtually silent, this Bionaire humidifier has an easy-to-fill 1-gallon tank with antimicrobial protective material in the tank to prevent mold and bacteria growth inside of the humidifier. Ideal for medium-sized rooms, this home humidifier is equipped with 3 adjustable speed settings to set your optimal comfort levels. The humidifier features a sleek, modern design with an easy-touch control panel and 7 color LED night lights for easy control whenever you need it, even in the dark.