The AUTOMATIC X is the most technical advanced and reliable vacuum cleaner in the world! The X model feature an electronic controller that measure the resistance of spinning brush roller against the floor and signal the power head to adjust up or down to appropriate brush heigh, ensuring optimal performance on both carpets and hard floors. The controller also alerts the user to problems, such as clog, worn brush, full bag, brush roller obstruction, and it automatically shut off the vacuum, when necessary, to protect the motor and belts from damage. The AUTOMATIC X offer instant-use cleaning wand and suction hose, a lifetime belt warranty, tool-free brush roller removal, a 40-foot power cord, three on-board attachments and protective rubber-coated wheels. Low, 51/2-inch Profile - Lower the handle flat to the floor to clean under beds, or lower it to the intermediate stop position to maneuver over rugs.