Ultrasonic technology disperses a fine mist into the air to alleviate dry air and provide comfort to those suffering from allergies, dry skin, or colds Top-fill 0.8-gallon tank is ideal for small- to medium-size rooms Two speed mist controls allow you to customise your comfort Silver Clean Protection helps to prevent the build-up of mould and mildew on the surface of the tank Optional aromatherapy tray lets you add a few drops of essential oils (not included) to enhance your atmosphere Low-water indicator alerts you when water needs to be added Auto shut-off function turns off the humidifier if the water runs out Easy-to-use design requires no evaporating pads or wicks to clean and replace