Philips 3000 Series AC3256/20 60-Watt AeraSense Air Purifier (White) Style:Air purifier   Philips 3000 Series Air Purifier with AeraSense & VitaShield IPS to ensure you and your loved ones breathe Healthier Air, always! AeraSense technology gives you reassurance by measuring and displaying real-time indoor air quality (PM 2.5) with professional grade air sensing.VitaShield Intelligent Purification System (IPS) naturally removes 99.97% allergens & ultra-fine particles as small as 0.02 microns (100 TIMES SMALLER THAN PM2.5).