Hoover WindTunnel Max Multi-Cyclonic Bagless Upright Vacuum Cleaner, Copper No Loss of Suction* 3 Channels of WindTunnel MAX Technology - maximum 3 channels remove dirt with less scatter Multi-Cyclonic Technology - 12 cyclones separate fine particles of dirt before reaching the filter with less frequent filter rinsing Maximum 28 Feet Automatic Cord Rewind - 28' auto rewind cord (the longest Hoover offers) rewinds in seconds at the touch of a button Up to 18 Feet of Above-The-Floor Cleaning Reach - maximum stretched cleaning of stairs, window sills, curtains and hard-to-reach areas