Nano Energy water bottle adopted from advanced nano technology. Combined with tourmaline, photocatalyst, active crystal and other natural mineral. Beautiful, healthy and durable to use. Features: 1. The energy Nazo cup will naturally transform your water. 2. Helps dissolve acid, quickly neutralizes toxins, maintains an acid-base balance and enhances immunity in your body from drinking water. 3. Can help with gastrointestinal problems, constipation, diarrhea, cardiovascular and cerebrovascular disease. Also arthritis and other diseases caused by acidosis. 4. Creates a silky-smooth and sweet tasting water. 5. Low negative ORP (typically reduces the Oxygen Reduction Potential by at least 200mv) giving it strong and measurable antioxidant potential high in oxygen, improve sleep quality Specification: Condition:100% Brand New Material: stainless steels Capacity: 400ml PH: 7.2-9.5 Hydraulic Pressure: 0.10-0.3MPA OPR: -230mv Filter Element Lifespan: 800L Size: approx.20*6.5cm/7.9*2.6in Weight: Approx.472g/16.6oz Package list: 1 * Alkaline Water Bottle Note: 1. Please allow 0~1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.