1 piece portable negative ion air purifier hanging neck household portable electronic mask

1 piece portable negative ionizer air purifier hanging necklace household portable electronic mask

Noise: 5
Power supply method: USB
Whether the source of patent: Yes
Product Category: air purifier
color: Black/White
model: KY100A
Patent type: Appearance design patent
Air purifier air volume: 51-150 cubic meters/hour
Features: Smoke and dust removal
Use environment: Home
working principle: Negative ions