Roomba 780 removes dirt, debris and hair from all types of floors, on its own, with one single touch or can be scheduled to clean automatically up to 7 times a week. roomba 780 uses both acoustic and optical sensors to help detect areas of smaller and softer dirt. This is combined with a new and exclusive feature that enables roomba 780 to adopt a brush-like, back-and-forth motion in areas where it has sensed excessive dirt and debris, for a focused cleaning effort. The robot also sports an Aerovac Series 2 Bin, a powerful vacuum that maximizes air flow through Roomba’s cleaning head to pull hairs and debris off the brushes and into the bin. A soft-touch bumper with polymer coating protects walls and furniture from possible scratches. extra brushes and a cleaning tool have been provided to help you maintain roomba. clever add-ons such as full bin indicator, touch controls (as opposed to buttons) and a remote control make using your Roomba even easier than before. The 780 additionally comes with 2 Virtual Wall Lighthouse to enhance room-to-room cleaning coverage.