Effectively eliminates bacteria, mites, pm2.5 particles in the air With special antibacterial layer, it can effectively kill bacteria Four times cleaning effect with shiny absorbency Suitable for Xiaomi Mijia Air Filter 2 2C 2H 2S 3 3C 3H Pro We suggest you replace the filter every 3 - 6 months Filters all with RFID chip. Color: A: Green / B: Blue / C: Purple Material: Composite Material Package Contents: 1 x Air Purifier 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 will be a little different than the real one. The measurement error is +/- 1-3cm. Shipping Time: We can ship all products within 5~8 business days