7 Healthy Water Options: 4 ionized alkaline continuously variable; 1 non-ionized purified; 2 ionized acidic presets. Advanced 7-Electroplate Technology: 7 platinum coated titanium, long-life, durable, energy-efficient plates. Built-in Active Carbon Water Filter: Long-life, hi-tech filter purifies over 1,585 gal. of water and last up to a year. Self-Cleaning: Unit cleans itself by reversing polarity after each use and auto-plate washing itself every 10.5 gal Additional Features: Fully variable 4.5 to 11 pH; OPR Range +600 to -750mV; intuitive backlit LCD, 5-year warranty. The Aqua Ionizer Deluxe 7.0 water ionizer is an advanced and powerful water ionizer. Depending on source water, the Aqua Deluxe Ionizer Deluxe 7.0 produces water with a pH of between 4.0-11.0 pH. It also boosts the waters age fighting antioxidant potential with a -800 ORP. Each inner activated carbon filter cleans and treats 4,000 liters. 7 Healthy Water Settings Produces pH 4.0-11.0 Antioxidant potential -800 ORP Alkaline Water is high in antioxidants and ideal for healthy drinking water. Acidic Water though not intended for drinking, is perfectly suited for skin, hair and scalp conditioning as well as plant care. In addition to allowing you to adjust your water’s pH level, all our water ionizers have built-in Active Carbon Water Filters designed to remove a whole host of harmful pollutants found in tap water. DOES NOT WORK WITH WELL WATER or PULL OUT FAUCET