Air Touch V2 - 3 in 1 Compound Filter. Designed for Air Touch V2 Air Purifier. Pre Filter captures large particles such as dust, lint, fibres, hair and pet fur at 1st stage and increases life of HEPA H13 Filter. HEPA H13 filter removes 99.99% of allergens and microscopic pollutants above 0.3 microns including PM2.5 and pollens. Filter Life of Up To 3000hrs or 1 year depending on the usage and pollution levels.