Vitashield Intelligent purification automatically senses air quality and removes 99.97% airborne pollutants as small as 0.003 microns, 800 times smaller than PM 2.5 Purifies a standard room in just 10 minutes with a CADR of 333 m3/hour (Standard room size is 18 ft by 12 ft with an 8 ft ceiling height) Ideal for master bedroom, recommended area: 269-409 sq ft. AeraSense monitors and displays real-time numerical PM 2.5 levels with professional grade sensing technology Removes 99.90% bacteria and viruses, tested to remove H1N1 virus Removes 99.99% pollen and house dust mites Filters out TVOCs and harmful gases like formaldehyde Philips is the no.1 brand in Air purifiers in India (Source: Euromonitor International Limited; Consumer Appliances 2018ED) Warranty: 2 years international In case of any product queries / issues, please contact the Philips Air customer care on: 18001031235