Filter for the Xiaomi Smart Air Purifier 4 / Replacement every 6 to 12 Months

Product Features: - This filter is only compatible with the Xiaomi Smart Air Purifier 4. - Consists of three layers: the primary filter layer, a high-quality Xiaomi filter, and a filter made of activated carbon that purifies and filters the air to a high degree. - The primary filter blocks larger particles such as dust and hair. - Suitable for long-term use as it's resistant to acids and oils. - The filter's efficiency decreases with prolonged use; therefore, it's recommended to replace the filter every 6 to 12 months to ensure optimal results. - Through the Mi Home / Xiaomi Home app, you can monitor the filter's usage. - The app will notify you when it's time to replace the filter. - The replacement process is very easy. Just twist and pull it out, and you can replace it immediately. Warranty: 1 year