Ultra-quiet and easy-to-drink-from cat water fountain, with a 2L capacity. I tried it for a while, but it seems like it didn't suit my cat. There is no noticeable dirt. I also purchased replacement filters, but I didn't use them, so I'll include them. - Model Name: +AQUA 2 - Capacity: 2L - Features: Ultra-quiet, easy to clean, easy-to-drink-from design, with filter - Purpose: For cats, water only - Country of Manufacture: Japan Thank you for looking.