Get both an air purifier and humidifier in one to improve your indoor air and relieve dry skin and allergies. Has extra-long operating time, up to 3 days, with 3.2-gallon tank, 2 performance levels for day and night mode, auto shutoff when water base is empty, and a fragrance container for the use of essential oils (not included). Can wash most of the components in washing machine or dishwasher. For rooms up to approx. 540 sq. ft. 11" w x 16.25" h x 15.75" d.