5-Stage Filtration System 365-Day Filter Life: Advanced 5-layer filtration including 2-layer pre-filter, True HEPA13, efficiency filter and activated carbon; The air purifier captures 99.99% airborne particles with a size of 0.3 microns Air Purifier Delivers Rapid Whole-Room Purification in 12 Minutes: 118 CFM CADR purifies 916 sq. ft. spaces hourly or 183 sq. ft. bedrooms every 12 minutes, significantly improving indoor air quality and helping you and your family enjoy fresher air Smart Auto-Mode Real-Time Air Sensing:Provirtec air purifier's ultra-sensitive sensor detects pollutants within seconds, instantly boosting fan speed to purify and refresh indoor air; Provirtec original filter is HEPA-grade while operating in auto mode, as tested by an independent lab Air Quality Visualizer PM2.5 Air Quality Monitor: HEPA air purifier with 4-color air quality indicator lights, HD display show real-time PM2.5 levels, instantly reflect indoor air conditions Multifunctional Smart Air Purifiers for Pet Family: 10 adjustable fan speeds for bedrooms/offices/homes, 12-hour timer child lock for Kitchen safety or nursery peace of mind Certified Safe for 24/7 Operation: Energy Star (energy efficiency), CARB (California homes), FCC (electrical safety), EPA (air quality standards); Ideal choice for pet owners, families with babies or children, the elderly, or for those who are eager to enhance the air quality