Cool, visible mist helps temporarily relieve dry air discomforts, in a sophisticated designUltra-quiet operation, with an essential oil tray for aromatherapy benefitsVariable output settings let you customize the moisture level in your airEasy to use and clean: no filter, automatically shuts off when emptyRuns up to 24 hours on low settingDesigned for medium rooms1.25 gallon tank capacity2 year limited warranty"