The AUTOMATIC X is the world’s most technically advanced and uniquely easy-to-use vacuum cleaner! Available in two power head widths, the 12-inch X7 and 15-inch X8 feature truly automatic height adjustment, using an electronic controller that measures the resistance of the spinning brush roller against the floor surface to signal up or down adjustments, which ensures optimal performance on both carpets and hard floors. The user is also alerted to clogs, a worn brush, or a full bag, and the vacuum automatically shuts off when brush obstructions occur to protect the motor and belts from damage. The X also has an instant-use cleaning wand and suction hose, a lifetime belt warranty, tool-free brush roller removal, a 40-foot power cord, and three on-board attachments.