The Blueair Blue 3210 Air Purifier uses HEPASilent Technology to provide clean air in your environment. With activated carbon and HEPA-type filtration, this purifier effectively removes impurities and allergens from the air. It has 4 speeds and a smart sensor for customized purification settings. The portable and quiet operation makes it suitable for use in bedrooms and living rooms. With a sleek blue design and a compact size of 20cm x 42.5cm x 20cm, this air purifier is a stylish and efficient choice for improving air quality in your home.