Main Features ● 2 Times The Air Intake Area It can deliver 8330L of clean air per minute and the output air volume in 3 minutes is equivalent to the air volume in 10m2 children s room ● 185 Increase in Aldehyde Removal Power Strong filter element filter out formaldehyde toluene and other common harmful gases to protect your baby s respiratory health ● Antibacterial and Antiviral Dual Coating Antibacterial and antiviral double coating can inactivate some bacteria and contaminants ● Upgrade Powerful Filter Element Five layers of integrated strong filter elements adsorption odor filter out PM2 5 pet hair pollen allergens etc ● Filter Element Life Increased to 1 5 Times Mijia Air Purifier 4 Pro adapts upgraded filter element its service life up to 9 months No need for frequent replacement saving energy and money ● Detachable Top Grille Design The top grille can be removed by unscrewing the screws both easy to clean the fan blades and air ducts to avoid secondary pollution while preventing accidental injury to the baby ● 33 4dB A Low Noise Screen brightness can be turned off low noise and no light damage ● OLED Large Screen Real time PM2 5 data display and directly reflect indoor air quality by colored light bars ● One Click Automatic High precision laser sensor sensitive monitoring of pollution changes When running automatic the purification speed is automatically optimized according to the air quality energy saving and efficient ● Smart Mijia APP Remote