Portable Personal Home & Travel Ionic Air Purifier Necklace Ionizer USB Rechargeable (White) This personal ionic air purifier is a unique wearable ionizer powered by built in Li-on rechargeable battery. This light-weight and sleek unit uses a highly efficient ionization technology which emits ions and creates your own personal air purified zone. It hangs around your neck and is compact in size with weigh only 55 grams. There are no filters to change and its ready to go whenever you are, on the plane, in taxis, in bus, to the gym, crowded elevators, in office, or anyplace you need. Package includes : 1 x Personal air purifier, 1 x USB charge cable, 1 x Instruction sheet, Gift box packaging.