Zodiac Polaris 9100 Sport Robotic in Ground Pool Cleaner Vortex Vacuum Technology captures more debris load than similar cleaners Top access, medium, all-purpose filter canister allows for easy clean-up 2WD technology cleans pool floor and cove; one cleaning cycle (2 hrs.) Lightweight (weighs 13 lbs.), compact design for easy portability and enhanced agility Cleans all pool surfaces, ideal for small to medium pools up to 40 ft. in length, 2 year warranty