Effective prevention of dust, hair, and impurities to help prolong the lifetime of the pump and water fountain. Filter 3.0 is compatible with PETKIT Eversweet 2S, Eversweet 3, Eversweet 3 Pro, Eversweet Solo, Solo SE, and Pure Drink cat and dog water fountains. Multi-layer filtration system features improved filtration performance with dual filter components and a high-density micropore filter that removes pet hair and most impurities, ensuring pets drink clean and fresh water. Before first use, soak the new filter in clean water for at least 10 minutes. Replace the filter every 30 days under normal usage. The actual replacement time may vary depending on usage and filter condition. The LED indicator will notify when it's time to replace the filter. Reset the device after replacing the filter. We recommend cleaning the water fountain and replacing the water once a week to maintain optimal performance and protect the pump and filter. Item model number: Filter Color: White Material: Plastic Package Contents: 5 x Water Fountain Filters 5 x Filter Cotton Note: Only the items listed above are included. Other products are not included. Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.