3 Speed settings: Low / Normal / High
???�÷?Çæ Pre-filter + HEPA filter + Carbon filter
???�÷?Çæ With Timer setting: 1/4/8 hour
???�÷?Çæ Filter change indicator
???�÷?Çæ With air quality sensor
???�÷?Çæ Built-in Ionizer
???�÷?Çæ With child lock
???�÷?Çæ Maximum air flow: 150m??
???�÷?Çæ Coverage Area 30m??
???�÷?Çæ Room Coverage size: 20-30m??
???�÷?Çæ Ion conduct concentration: > 5 million pcs/cm??