LeveLuk SD 501 is Enagic’s Flagship Model! The industry-leading continuous ionized electrolysis water generator system, the SD501, is the finest machine in its class. With the strongest electrolysis chamber available, fully-equipped with a built-in electrolysis chamber, and featuring a large LCD panel and clear voice prompts, the SD501 is the leader of the pack. 7-Platinum-plated Titanium plates comprise the electrolysis chamber & it is capable of producing 5 types of water.