Millions have discovered the healthful benefits of alternative oxygen therapies for prevention & wellness. Now you can too! Oxygen is a powerful tool in today's prevention and wellness programs. And now there's an easy way to ensure you're getting all the oxygen you need. This 62 oz. Big Pitcher saturates your drinking water with oxygen that's immediately absorbed by soft tissue in the mouth, esophagus & stomach. Cellular energy is produced when oxygen reacts with nutrients so the more oxygen in your system, the more energy you have. The water tastes great too! AC powered. No cartridges ever needed. 3-year limited warranty.