Double the capacity, double the benefits in a single filter. The Energy Pitcher Filter C7 has double the filtering capacity. It filters 732 liters of water and lasts a typical family of four 90-120 days. What's most exciting? All of the key components that structure and charge the water are housed in the filter that sits in the water all day, every day. This ensures you get the highest quality, negative hydrogen enriched, alkaline, anion water available today.