Waterers improve the health of your pet. They guarantee delicious drinking water that is always fresh and filtered. Water circulation increases oxygen uptake. Running water is more attractive, and animals will instinctively drink more quickly. Drinking more water is good for your cat's or small dog's kidney function. It reduces the risk of crystal formation and development of disease in the urinary tract. This waterer is very quiet and has an energy saving mode. It consists of two spare activated carbon filters (included) that continuously clean the water. Its volume is 1.5 l.