Air Purifier Type - Room; Purification method - High-Efficiency Particulate Arrestant filter type, Three stage advanced filtration system with patented Honeywell HiSiv technology that removes pollutants with more than 99% efficiency; Completely 'Ozone Free' Air Purifier. Does not emit any harmful gases as a byproduct of the filtration technology. Proven HEPA technology for trapping dust, harmful pollutants from air; Along with ionizer to improve the air quality and refreshing air in the room, Specially treated carbon filter with specially sized pallets for better adsorption properties for odour/foul smell, oxides of Sulphide and Nitrogen, dust, cigarette smoke etc