iRobot Roomba 4220 Discovery SE Intelligent Floorvac Vacuuming Robot, Grey

iRobot Roomba Model 4220 Vacuum Cleaning Robot effectively cleans both carpets and hard floors. Roomba cleans hard to reach areas like wall-edges and beneath furniture. It automatically avoids stairs and other drop-offs and Roomba even senses dirtier areas and cleans more thoroughly in those spots. At the end of a cleaning cycle or when its battery is running low, Roomba returns to its Home Base to recharge. Roomba comes with 2 virtual walls that keep Roomba cleaning where you want it and out of off-limit areas.