Effectively eliminates , , PM2.5 particles in the air With Special layer, it can effectively kill Suitable for Mi cleaner, Mi 2 cleaner, Mi pro cleaner We suggest to replace the filter every 3 - 6 months How well the filter works depends on its ability to clean and aerodynamic design. Our brand new filter cleaner ( version) can effectively absorb PM2.5 particles, . 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. Colour:Purple Material:plastic Package Contents: 1 x filter elements 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.