The Dolphin S 300i is a Premium Class robotic pool cleaner. The Premium Class is the cleaner designed for those who want it all. This line of robotic cleaners are the culmination of over 32 years of research, development and manufacturing. Programmable cleaning patterns, remote controllable, automated operation and precision navigation combine to form the most impressive line of robotic cleaners available today. The Premium Line is the choice of the most discerning pool owners. When only the best is good enough.