WND TNL SELF PRPELLED VAC Self-Propelled - makes vacuuming effortless whether going forward or in reverse. WindTunnel Technology lifts and removes surface debris and deep down embedded dirt and nozzle width is 15 inches Embedded DirtFinder - sensor turns green when no more dirt is being removed from your carpet or floors. 3 Position Carpet Height Adjustment - adjust as needed to clean all flooring types easily and efficiently. Includes 2 Extension Wands, Crevice Tool, Upholstery Tool, Dusting Brush and Air Powered Hand Tool.