... Usage:Car, auto, bus, automobile and office etc.Product Accessory:Filter, Car charger, Battery inside, Perfume Or adapter, Manual, ... Warranty cardMainly Functions:1. Advance Active Carbon HEPA Filter technology HEPA:HEPA (HEPA- high efficiency particulate air ) Centrally ... item.5. Fragrance function:You may add aromatics or perfume oil, and to make fragrance in car, produce the romance6 ...