Cost Effective and Eco-Friendly: BPA Free Plastic Material, Stainless Steel Cartridge and Nature Stone Media. Portable and design: simple, lightweight, quick, and safe to upgrade your water; no need electricity.Produce natural alkaline water with balanced pH, which results neutralizes acidic waste and discharges it from the body.Make Anti-Oxidant water with an ORP (Oxidation Reduction Potential) - 100 to -200Alkaline Hydrogen Antioxidant Water Bottle Turns Ordinary Water into Superior Filtered Alkaline and Ionized Pure Energy Water