and high quality Made of high-quality materials, more durable Filter filters fine dust to reduce dust, pollen and other from penetrating into the air you breathe. As part of normal maintenance, it can be easily removed and replaced It is best to replace spare parts every 2 to 3 months to keep the machine running at its best performance Main features: Effectively eliminates , dust , PM2.5 particles in the air With Special layer, it can effectively kill Four-fold cleaning effect with shiny absorbency Suitable for Mi cleaner, for Mi 2 cleaner, for Mi pro cleaner We suggest to replace the filter every 3 - 6 months Product features: How well the filter works depends on its ability to clean and aerodynamic design. for Our brand new filter cleaner ( version) can effectively absorb PM2.5 particles, dust . Coated with a special layer, it can kill . Activated carbon can eliminate pollutants in the air. Our app will remind you of the need to replace the filter. Material: composite materials colour: B-green+blue Package Contents: 2 x hepa 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.