The Black+Decker HM4000 humidifier has multiple settings for differeng comfort levels. The 3 modes of mist intensity – low, medium and high provide control over the mist spray levels. The auto mode with its Intelligent sensor technology adjusts the mist levels according to the surrounding humidity. The touch controls provides for quick selection of the preferred setting. The LED indicator changes color to Yellow, Green or Blue based on the ambient humidity. The mist nozzle rotates 360 degrees to direct the mist flow. The water tank has an integrated handle for portability and convenient refills. The 4L water tank provides a continuous mist output for upto 14 hours. The ‘no water’ alarm adds safety and protection. Fragrances can also be added via the aroma tray for a pleasant a,bience.