iRobot Roomba 614 Black Auto Charging Robotic Vacuum3 Stage Cleaning System and Dual Multi Surface Brushes pick up everything from small particles to large debris Patented Dirt Detect sensors alert Roomba to work harder on concentrated areas of dirt, such as high traffic zones of your home Full suite of intelligent sensors guide the robot under and around furniture to help thoroughly clean your floors Edge sweeping brush is specially designed at a 27 degree angle to sweep debris away from edges and