The Water Tech Volt Battery Powered Leaf Vacuum is completely self contained. It does not rely on garden hose pressure to get the job done. Its “on-board” motor, transmission and safety clutch combine to lift leaves right off the pool floor and deposit them into its high capacity debris bag. And, while creating suction, the slowly rotating propeller continuously keeps debris, such as leaves, seeds and twigs, agitated and moving, which avoids blockages experienced with “Pressure Side” (garden hose) Leaf Vacuums.