Now with a simplified design and longer battery life, iRobot's award-winning floor scrubbing robot removes up to 98% of common household bacteria so floors get reliably clean with the touch of a button. The Scooba 390 cleans up to 450 square ft on a single battery tank. It uses a powerful 4-stage cleaning system to prep, wash, scrub and squeegee sealed hardwood, tile and linoleum floors. Scooba uses only clean solution (tap water, water and vinegar or Scooba Hard Floor Cleaner, Natural Enzyme Formula) to wash floors. It even cleans beneath cabinet edges, tables, chairs and other hard-to-reach places. The included Virtual Wall marks off-limit areas. Also includes battery charger, 4 packets of Scooba Hard Floor Cleaner, Natural Enzyme Formula, and a suctino blub for cleaning and prepping the solution tank. This model includes a 12 month limited warranty for the robot and a 6 month limited warranty for the included battery. Product Features 4-Stage Cleaning Process - First, Scooba 390 preps the floors by picking up dirt, crumbs and other debris. Next, Scooba washes, applying only clean solution on the floors. Then powerful brushes scrub the floor to remove dirt, grime and stuck-on messes. Finally, a squeegee vacuum lifts dirty water from the floors. Scooba 390 does all of this in a single pass. Clean Water Management System –Unlike a mop, which spreads around dirty water, Scooba 390 keeps cleaning solution in a separate tank so that only clean solution is placed on the floor. Extensive Coverage –Scooba 390 has a wide cleaning head ideal for kitchens and other large areas. It covers up to 450 square ft. on a single tank, making at least 3 passes over every area for thorough cleaning. iAdapt Responsive Cleaning Technology -iRobot’s advanced system of software and sensors that allows Scooba to clean more of your room, more thoroughly. Scooba covers every section of your floor multiple times, cleaning areas you can’t easily reach including under furniture, around everyday obstacles, along walls and under cabinets. It even avoids rugs, stairs and drop-offs. Extended Life Power Management –Scooba 390 features Extended Power Life Management to deliver longer battery life than previous Scooba models. Virtual Wall Technology –Our room confinement system allows Scooba to stay in the rooms you want to clean and out of the ones you don’t. Easy to Use —Let the robot do the work. Scooba cleans floors at the touch of a button. It is safe to use on tile, linoleum and sealed hardwood floors and cleans with Scooba Hard Floor Cleaner, Natural Enzyme Formula, water and vinegar mixture, or clean tap water. Intuitive Design –Scooba 390 has updated design features that make the robot even easier to use; all parts that need to be cleaned or maintained are now colored grey and orange.