Angelpet Snail-Shaped Automatic Pet Water Dispenser with 2 Replacement Filters and a set of 6 dedicated replacement filters. This water dispenser uses a gravity-fed design, eliminating the need for electricity, and automatically replenishes water. The filter softens tap water and filters out impurities like fur and dust, keeping the water clean. Product Name: Angelpet Automatic Pet Water Dispenser (Snail Water Feeder) Features: Gravity-fed automatic water supply (no electricity required). Large 2.8L tank. Supplies clean water with a filter. Transparent tank allows for easy water level monitoring. Filter: Replacement high-density filter specifically for the Angelpet snail-shaped water dispenser. The replacement frequency is typically about once a month, but adjust based on water usage and the season. The item will be shipped without the original box, wrapped in bubble wrap and placed in a cardboard box.