Ultrasonic super fine mist, adjustable warm and cold mist operating modes. Advanced noise control design, super quiet operation, coloring LED indication lights. Build-in ionizer to release negative ion to refresh your indoor air, five layer intake air filter to purify air circulation, Innovative ceramic filter core to soften water. Set desired humidity level via the build in hygrometer, humidity volume control and timer setting. Automatic safety shutoff with light alert when water runs out1 gallon water tank to run at least 10 hrs.