I've been using it for about half a month, but my pet doesn't like it and hardly uses it. I'm including the filters. There are three filters, as I'm already using one. This is a 1.5L USB rechargeable circular water fountain, providing clean water for your pet. - Brand: GEX - Model Name: Pure Crystal uell - Capacity: 1.5L - Power Type: USB Rechargeable - Design: Circular Thank you for looking.