Portable negative ionizer micro air purifier to remove second-hand smoke hanging neck purifier necklace

noise:0-20
Power supply method: USB
Product Category: air purifier, ionizer
colour: white
way to control: Push button
Filter type: no
Air purifier air volume: 50 cubic meters/hour
Features: Sterilization
Use environment: Home
After-sales service: Shop three guarantees
Rated frequency: 50
working principle: Negative ions