Homedics Warm & Cool Mist Ultrasonic Humidifier has a sleek tower design which brings the mist closer to you. Easy to remove and fill 1.4 gallon tank; Choose cool or warm mist; Provides up to 60 hours run time per filling; Programmable humidistat; Built-in timer, up to 8 hours; Adjustable mist control; LCD digital readout displays room humidity level, programmed humidity target, time setting, mist intensity and mist temperature; Ultrasonic technology for whisper quiet, visible, micro-fine mist; Clean Mist anti-microbial technology helps to prevent the growth of molds and mildews on the surface of the water tank; Features night light and auto shut-off protection when tank is empty; Medium/Large rooms; Demineralization Cartridge included.