No one wants a dirty environment. Dusty belongings? Spray disinfectant and it's clean. But that's not the case with the air we breathe because we can barely see contaminants that could be harmful to our bodies. TechCare Air Purifier has advanced 3-Stage Filtration with high-efficiency particulate air (true HEPA) filters, which are proven to trap 99.97 percent of particles of 0.3 microns in size. It eliminates odors, dust, mold, pet hairs, smokes and allergens in the air. With silent comfort, this purifier works under 28dB to give you a peaceful sleep or better focus in the office. It also features a night light, adjustable timer, filter change indicator to complete its advanced design.