UNIQUE FILTER SYSTEM: The drinking fountain provides filtered, chilled and circulated water. The drinking fountain is equipped with a water pump that provides circulation and filtering through a ionic resin and activated carbon filter. The filter system filters all hair, food remains. Provides cleaning water to your lovely pets. PROMOTES HEALTH and : Cats prefer to drink water and attractive when a source of flowing water is available. In nature, flowing water is much fresher than standing water. In addition, flowing water ensures a constant water circulation and a lot cleaner water. MODERN DESIGN: 2.5L or 0.66 Gallon capacity is great for small to medium pets! The material is PP Resin and 100 percent safe for your beloved pet. The transparent water level window clearly indicates the water level and reminds you to replenish water in time. Adapter with 1.5m USB cable easy to use. ULTRA SILENT PET FOUNTAIN: The drinking fountain is equipped with a very quiet water pump, this is nice and safe for your pet and no annoying buzzing noise (measured 40dB). In addition, the water pump has a very low energy consumption of only 2W. Item Type: Water Bottles Type: colour:white Material:PP size:Height: 7.5cm Package Contents: 4 x Filter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.