Dirt appears every day, but keeping up with it just got easier, simply pressing the CLEAN button will make Roomba will do all the hard work for you, freeing up your time to work on other things or allowing you to simply enjoy your day. Self Recharge No need to hunt Roomba down when the job is done. Roomba charges itself, returning to its Home Base to dock and recharge between cleanings iAdapt Responsive Navigation Technology. In coverage tests, Roomba out-cleans the competition thanks to iAdapt Technology, iRobot’s advanced system of software and sensors, iAdapt enables Roomba to find its way around any shape or size of home, covering every area of floor multiple times for a complete clean. iAdapt Responsive Navigation 33w Up To 2 Hours Battery Life 4 Empty Sensors -?