PureGuardian H1010 14-Hour Ultrasonic Cool Mist Humidifier, Table Top, Blue Tank is treated with Silver Clean Protection to help fight the growth of mold and mildew on the surface of the water tank Ultrasonic technology is ultra-quiet when running and provides a soothing cool mist Saves money with no evaporating pads, filters or wicks to replace or clean Easy-to-clean water tank .21-gallon tank capacity