Xiaomi - Smart Air Purifier 4 Compact Filter

Primary Filter: This filter blocks large particles such as dust, hair, and small chips. It's also very durable, as it's resistant to creases, grease, and acids.
Xiaomi High Efficiency Filter: This filter captures 99.97% of particles as small as 0.3 micrometers. It filters out PM2.5, dust, pollen and other allergens, providing consistently clean air.
High Quality Carbon Filter: The carbon filter works with other filters to clean the air of odors, smoke, and even the smallest microplastic particles