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 & nose wherever you go. It also features a humidifier to combat dry air in aircraft cabins & other spaces, & 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: DC 12 V Power consumption: 0.8 W (4x AAA) Ion output: >= 1x 104/cm 3 Active oxygen output: <= 0.04 ppm Dimensions: 11 x 8.1 x 2.8 cm Weight: 110 g