Sebo Automatic X8PRODUCT DESCRIPTION AUTOMATIC X models are the most technically advanced and uniquely easy to use vacuum cleaners in the world! Available in two power head widths, the 12 inch X7 and 15 inch X8 feature truly automatic height adjustment, an LED headlight, and an extra layer of micro filtration. An electronic controller measures the resistance of the spinning brush roller against the floor surface and then signals up or down adjustments, to ensure