The powerful unit automatically adjusts to any floor surface including wood, tile, linoleum, and low- to medium-pile carpet, while its counter-rotating brushes reach deep into carpet fibers to lift dust, pet hair, cat litter, food crumbs, and more. After determining the room size, the vacuum's artificial intelligence adjusts the run time to ensure thorough cleaning of the entire floor surface. Because it cleans under furniture, along walls, and other hard-to-reach areas, it actually vacuums more of the floor than a standard upright can. A gentle-touch bumper system senses obstacles so the vacuum automatically slows its approach, gently touches