Powerful cleaning takes care of stubborn dirt and messes with a 3-Stage cleaning system. Creates an imprint smart map to schedule cleanings by room. Returns to base to recharge before resuming cleaning. Integrated sensors detect dirtier areas for a deeper clean. It's also perfect for pets adjusting to different floor types with dual multi-surface bristles. Included: iRobot Roomba i4 robot vacuum, 1 home base charging station, 1 virtual wall and 2 AA batteries, 2 extra high-efficiency filters.