iRobot - Roomba Vac 2 Essential robot vacuum + AutoEmpty dock (Q0520) - Black Effortless to use, the Roomba Vac 2 Essential robot + AutoEmpty dock not only has 2x cleaning power* but it also empties on its own into a bag that holds up to 60 days of dirt and debris. *As compared to the Roomba Essential robot​ A powerful 3-Stage Cleaning System vacuums with four levels of suction power, a Multi-Surface Bristle Brush, and a special Edge-Sweeping Brush so dust can't gather in corners. With the AutoEmpty dock, the robot self-empties into an enclosed bag that holds up to 60 days of dirt and debris. The smart navigation methodically cleans in neat rows, while sensors help it navigate around furniture and avoid falling down stairs. The iRobot Home App simplifies your life with features like Clean While I'm Away, suggested cleaning schedules, and a Clean Map report so you know where your Roomba Vac 2 Essential robot cleaned, even if you weren't home to see it. Recharges And Resumes The Cleaning Task Cleans for up to 120 minutes on a single charge and when its battery is low, automatically returns to its charging station to recharge and resume Wall to wall, corner to corner. This is comprehensive cleaning your way. With 4 power levels, choose a quieter cleaning or a more powerful vacuum. Easily target the places where your floors need extra attention. With spot cleaning, your robot spins in place, cleaning in one spot for up to 2 minutes.