Blue Diamond is computer controlled and pre-programmed to scrub, vacuum and filter dirt and debris from pool bottoms, walls, waterlines and steps automatically!The Blue Diamond completely cleans all sizes, shapes and types of swimming pools. The lightweight Blue Diamond models have their own special filtration pumps and bags located inside the bodies. The units operate independently of any main pool filter thus eliminating the need for back washing and messy, bulky hoses. Engineered for reliable worry free operation and programmed to avoid ladders and other underwater obstacles. Simply remove the Blue Diamond from the box and put it in your pool. No Installation Is Required!