iRobot Roomba 400 Vacuum-Cleaning Robot, Orange Vacuum-cleaning robot automatically adjusts to any floor surface Counter-rotating brushes, effective vacuum, and edge-cleaning spinning side brush Removes dirt and debris from under beds, couches, and other hard-to-reach places Infra-red cliff sensors; rechargeable battery, 3-hour charger, and 3 filters included Measures approximately 13 by 13 by 4 inches; 1-year limited warranty