The Smartpool NC22 Smart Kleen Robotic Pool Cleaner is a versatile robotic cleaner designed for both above-ground pools (up to 33 feet) or in-ground pools (up to 14 feet x 28 feet). The cleaner features intelligent navigation, allowing the SmartKleen to change direction without requiring walls. Its revolutionary lightweight design cleans and scrubs vinyl liners, fiberglass, and concrete pool floors within a 2 hour cleaning cycle. Its powerful direct-drive motors offer greater traction.