iRobot Verro 300 Pool Cleaning Robot Hands-free pool-cleaning robot for in-ground pools up to 20 by 50 feet Systematically cleans from floor to waterline in 60 to 90 minutes Powerful hydro-jet system "power washes" all pool surfaces Reusable fine filter bag removes large and small debris down to 2 microns Measures 20 by 18-3/8 by 11-2/3 inches; 1-year warranty