About Our Product Air Purifier Type - Room; Purification technology - High-Efficiency Particulate Arrestant (HEPASilentTM) Coverage area: Classic 280i cleans up to 279 sq.ft. / 26 sq.mtrs every 12 mins. Suitable for medium to large rooms Clean Air Delivery Rate (CADR): 340 m3/hr (for Dust); CADR indicates volume of air purified every hour (in cubic mtrs) Wattage: 20 to 80 watts (lowest to highest fan speed, depending on usage) Blueair's innovative HEPASilentTM Technology removes 99.97% of all air borne pollutants, bacteria, virus, allergens, microplastics and pet dander upto 0.1 micron in size, with minimal noise and energy consumption. WHISPERSILENT. No louder than a whisper at its lowest speed (32 dB) Wifi connectivity for easy air quality control. Just connect your device to Blueair Friend app to control air purifier from anywhere Integrated Particle and TVOC sensors to calculate indoor pollutants and calibrate the unit automatically

About Our Product Air Purifier Type - Room; Purification method - High-Efficiency Particulate Arrestant (HEPA) filter type Coverage area: Blue 211 cleans upto 250 sq.mtrs, great for medium to large rooms Clean Air Delivery Rate (CADR): 590 m3/hr; CADR indicates the volume of purified air (in cubic mtrs) which an air purifier produces every hour The HEPASilent filtration technology removes 99.97% of airborne pollutants like bacteria, viruses, allergens, Pm 2.5 particles, microplastics, etc down to 0.1 micron in size Particle + Carbon filter with largest filter area of ( 4.3 sq.mtrs) for best filtration effeciency and consistent clean air. Removes all particle and gaseous pollutants Powerful 360 degree air intake for efficient air cleaning , Energy efficient, Whisper Silent performance Additional washable pre- filter catches larger particles,extending the life of main filter, also change the colour as per the room décor