Effective prevention of dust, hair, and impurities. Helps prolong the lifetime of 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 every 30 days under normal usage. Actual replacement time may vary depending on usage and filter condition. The LED indicator will notify when replacement is needed. Reset the device after replacing the filter. Clean the water fountain and replace water weekly to maintain pump and filter performance. Item model number: Filter. Color: White. Material: Plastic. Package includes: 5 x Water Fountain Filters, 5 x Filter Cotton. Package content is limited to listed items; other products are not included. Note: Lighting and display differences may cause slight color variations between image and actual item. Measurement allowance: +/- 1-3 cm.