Please review the following device that is more effective, lower maintenance and RISK-FREE for only US$689. People drink Alkaline Water and expect to get the benefits from Negative Ion to boost up body pH and antioxidant level. But, they can only get limited benefits due to the limited amount of Negative Ion provided to their bodies. Once negative Ions are absorbed by human body, they will be neutralized immediately by free radicals, toxins and other substances. They will not travel to the other areas of the body.