1. , high-quality materials, well-made, durable, and highly matched with the equipment. 2. Clean accessories keep your home robot at its best performance. As part of daily maintenance, the accessories are easy to remove and replace. At the same time, reduce the infiltration of dust, pollen and other allergens into the air you breathe. 3. In order to achieve the best cleaning and filtering effect, the cleaning accessories should be replaced every 2-3 months depending on the frequency of use. 4. The function of the filter is to filter the dust, dirt and other impurities sucked in by the sweeping robot to keep the robot clean and running normally. The filter can also prevent dust and dirt from entering the motor and other parts of the robot, thereby extending the service life of the robot 5:HEPA filter is made of good eco-friendly materials, delicate and delicate, and matches the equipment, to ensure optimal performance and a healthier lifestyle. Compatible Models Compatible For Xiaomi Dust Mite Vacuum Cleaner Pro Compatible For Xiaomi Mijia Mite Remover Pro Model: B402HW / B402CN Colour: Material:plastic Package Contents: 4 x Filter Only the above package content, other products are not included. Note: Light reflection 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.