With its enhanced design, including improved navigation, coverage, pickup, and filtration, this vacuum-cleaning robot makes it easier then ever to clean floors throughout the house–hands free. Simply press the "clean" button & the unit will vacuum the whole floor on its own, adjusting automatically to any floor surface including wood, tile, linoleum, rugs, and carpet. The vacuum's dual,high-speed,counter-rotating brushes pick up everything from tracked-in dirt by the front door to food crumbs on the kitchen floor to pet hair throughout the house. It also provides anti-tangle technology with auto reverse,innovative spinning side brushes to ensure thorough cleaning in corners and along baseboards,& a gentle-touch bumper that senses obstacles so that it can slow down and carefully clean around them. The unit's dirt sensor will direct the cleaning time & focus where it's needed most, and its low-profile design means easy cleaning under beds, couches, & other hard-to-reach areas. Another thoughtful detail includes its ability to schedule preset cleaning times–great for coming home to a clean house after a long day at the office. Even more, the cleaner comes with built-in cliff sensors that prevent it from falling down stairs and a Virtual Wall system, which allows for setting up invisible barriers that confine the unit to a designated area. The vacuum's large dustbin empties easily, and its improved filtration system traps dust, pollen,& other allergens, helping to ensure only clean air gets released back into the room. For added convenience, the vacuuming robot automatically returns to its self-charging Home Base to dock & recharge between cleaning cycles or when the battery starts to run low. Accessories include a bumper extension,a brush cleaning tool,a power adapter,a rechargeable battery,2 extra filters,2 Virtual Wall Lighthouses,& 2 Extra Bristle Brushes & 4 "C" batteries for the Virtual Walls. It measures approximately 13x13x4". 1-yr manufacturer warranty.