iRobot Roomba i7+ 7550 Black Auto Charging Robotic Vacuum with Automatic Dirt DisposalCleans up after you, and itself forget about vacuuming for months at a time with the Clean base automatic dirt disposal that allows the i7+ to empty itself for up to 60 days; AllergenLock Bags capture and trap 99% of pollen and mold Powerful performance and powerful pick up pulls in stubborn dirt and messes with a Premium 3 Stage Cleaning system and 10X the power lifting suction (compared to the Roomba 600 series cleaning system) Guided by serious