Effective prevention of dust, hair, and impurities. Helps 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. Features a multi-layer filtration system with improved filtration performance. Utilizes dual filter components and a high-density micropore filter to remove 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. It is recommended to clean the water fountain and replace the water weekly to maintain pump and filter performance. Item model number: Filter. Color: White. Material: Plastic. Package contents: 5 x Water Fountain Filters, 5 x Filter Cotton. The package includes only the items listed above; other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.