1.Necklace ionizer 2.Avoid hypersusceptibility 3.Prevent influenza 4.Avoid radiation 5.Person decoration Product Name:Battery power supply necklace ionizer personal air purifier Product Usage:People, Person, Student, ChildProduct Accessory:Battery, Charger, NecklaceMainly Functions:1. Freshen air2. Remove odor, kill bacteria3. Dispel the static4. Protect eyesight5. Scatters smoke and massed dust6 ...