USB Mini Portable Air Purifier Necklace Color:White Additional features: Hanging neck

Additional features: Hanging neck

Speaker impedance: 42

charging 1h

1 transmitter with 6 receivers

Frequency Range: 2

USB Mini Portable Air Purifier Necklace Color:White Additional features: Hanging neckCharacteristics: 1. Advanced pulse technology is used to release a large amount of oxygen anion. Latest double carbon brush negative ion generator design uses over 6 million negative ions to effectively remove harmful substances such as floating dust, smoke, formaldehyde and PM2. 5 from the air . 2. release a large amount of oxygen anion, kill harmful bacteria, mold and viruses, break down smoke, odors and formaldehyde, benzene and other harmful gases