This Black + Decker Desktop Air Purifier includes a HEPA13 filter, which provides a 99.97% filtration rate, removing finer particles such as allergens and germs to provide a cleaner, healthier airflow all year round. It features three purification filters, including; a pre-filter for large particles; a carbon filter for the removal of gases and an anti-bacterial filter for removing any harmful particles for a cleaner environment. You can choose from four different modes; high and low airflow, as well as sleep and automatic air purification function for added versatility. The multi-coloured LED lights indicate pollution levels to ensure your room has the best possible airflow. The built-in eight-hour timer lets you set how long you'd like to purify, which will then turn off automatically afterwards. It includes an indicator which highlights when it's time to replace the filter. Its compact and slim-line design is suitable for purifying smaller rooms.