Air purifier, with Pre-filter attracts large particles and pollutants, HEPA filter removes dust, pollen, smoke as small as 0.3micron efficiently Charcoal filter removes toxic chemicals, harmful gases, odors and cigarette smoke. Powerful UV germicidal lamp destroys micro-organisms, such as germs, viruses, fungi (such as mold) and bacteria, preventing them from reproducing and recirculating through the room. Negative-ion with output 3 million/cc to to neutralize floating pollutants throughout the room, highly effective against dust, bacteria, etc. 1, 2, 4 and 8 hours timer and remote control High/low settings for fan speed and dust collection power Wall mounted or desktop use, for great space saving 10,000 hours alarm reminding to change the HEPA filter After replacing HEPA filter, press HEPA reset button to count the time again Maximum power<40W Noise: less than 30dB Air delivery highest: 100.7CFM UV irradiation intensity: 4,2μW/cm2 Dimensions: 38.6x16.0x33.9cm (15.2x6.3x13.35 inch) Unit net weight: 4kg Package: one unit/gift box and four units/master carton Stuffing quantity: 40-feet HFCL container: 2,380 units 40-feet FCL container: 2,088 units 20-feet FCL container: 996 units