1. Personal Air purifier 2. Battery power supply 3. Ionizer air purification 4. For person with necklace 1. Battery Power Supply Necklace Ionizer Personal Air Purifier usage:Person, poeple, students, woman, man, all poeple etc.2. Product Technic:(1). Personal Air purifier(2). Battery power supply(3). Ionizer air purification(4). For person with necklace3. Package infomation:Pd Weight: 38 g Pd ...