● 3-stage purification includes a pre-filter H13 HEPA filter and activated carbon filter ● Large purification area reaches up to 1300 sq.ft per hour ● Effectively removes 99.99% of particles as small as 0.1 microns ● Smart touch panel and 4 adjustable fan speeds for easy operation ● 3-color air quality indicator lets you know the current air quality in time ● The 2/4/6/8H timer allows you to set the auto shut-off time freely ● Child lock function prevents kids from playing with the settings ● 360° air intake design to refresh the air in your room faster ● Filter replacement indicator reminds you to replace the filter ● Quiet sleep mode with screen off function to bring you a good sleep ● Perfect for living room bedroom kitchen office etc