These battery-powered devices are designed to efficiently vacuum underwater debris. They provide an easy and time-saving solution to pool maintenance as they do not require the connection of any electrical cords or hoses. Each model is completely submersible and specifically designed for different pool & spa sizes. The rechargeable lithium battery provides optimal power and performance over time. Simply connect the cleaners to the handle provided* or to a standard telescopic pole (not included). Turn on with the press of a button, and get rid of underwater debris in minutes!