Dolphin 2018 Premier Robotic in-Ground Pool Cleaner MultiMedia Now Included - New Dolphin Premier offers up to four types of media in one robot. Dual filter cartridges + oversized bag included. Latest evolution of commercial grade DC motors reduce energy use up to 87%. Microprocessor controlled Smart-Nav software delivers highly optimized scanning and coverage for a new level of clean. This game changing swivel system provides unlimited 360 degree rotation for tangle free operation. The underwater robotic cable swivel is one of the greatest engineering accomplishments in the pool cleaner industry. Premier reaches deep with dual scrubbing brushes to scrub the pool surface and then vacuum it away so you don't have to. 3 year warranty with no-nonsense rapid repair. Not pro-rated. Not limited to hours or cycles. With a warranty that's 50% longer than the nearest competitor, it's the best in the industry.