The heaven fresh hf 85 personal ionic air purifier with humidifier is a wearable ionic air purifier that delivers ion rich air to the mouth and nose wherever you go it also features a humidifier to combat dry air in aircraft cabins and other spaces and weighs just 110 grams the weight of an average mobile phone perfect for adults or children the hf85 personal air purifier runs on 4 aaa batteries not included or ac adaptor specifications of the heaven fresh hf85 rated voltage