Air purifier Roger measures the air quality and detects pollutants immediately. He purifies the air with his Dual Filter – removing pollutants such as fine dust, pollen, viruses and bacteria from the air. Roger shows the same level of efficiency when eliminating gases, unpleasant odours or volatile organic compounds (VOCs). The mobile air purifier has a textile pre-filter with hygiene function which protects the Dual Filter and extends its service life.