Maytronics 99996333-DX3 Dolphin Robotic Pool Cleaner Maytronics dolphin robotic pool cleaner is recommended for pools up to 40 feet in length Scrubs, vacuums and filters the pool in just 3 hours Large self-contained inner filter bag, collects dirt, debris and even dust particles Independent unit no pre-installation needed, no connections to pool system Small, lightweight and easy to handle and easy maintenance