Product Name: Cat and Dog Snail Water Feeder Automatic Water Dispenser, No Electricity Needed, Snail-Shaped Product Details: Capacity: 2.8L (lasts about a week) Filter sold separately. Filters can be purchased online, etc. (Search for "snail-shaped water dispenser filter") It is recommended to replace the filter approximately every 30 days. Features: No electricity required, so it can be used even where there are no outlets. The design is cute, resembling a snail! A food bowl can also be placed inside. It's silent, so you don't have to worry about noise. This product has been stored with almost no use. Please consider purchasing! Price negotiations are also welcome!