Zodiac Polaris 9400 Sport 4WD Robotic in Ground Pool Cleaner Vortex Vacuum Technology captures more than four times the debris load of other cleaners Top access, large filter canister has four times the capacity of other similar cleaners 4WD technology cleans pool floor, walls and scrubs tile line with pleated scrubbing brush Cleans all pool surfaces, pools up to 50 ft. in length, 7 day programmable cleaning cycle Includes lift system and heavy duty matching transport caddy, 2 year limited warranty