100% ozone-free: completely ozone-free, and never use UV-C ultraviolet light that may produce harmful ozone and secondary pollution. Powerful performance: the CADR value of is 130 cfm/221 m3/h, which is very suitable for living room, bedroom and kitchen. It only takes 18 minutes to cover 300 square feet/28 square meters. Only products weighing more than 6 pounds and about 2.7 kilograms can be equipped with such a powerful motor to achieve the best air cleaning efficiency. ) Three-stage filtratio