Features:
1. Portable wearable design: can be hung around the neck, easy to carry, hands free.

2. High-effect: built-in negative ion generator can release up to 20 million negative ions, kill more than 99% of smoke, pollen, dust, mold spores and other harmful particles in the air.

3. Rechargeable Battery:  380mAh, USB charging 0.5h, working time for 15-20hrs.

4. Quietness: the sound is very quiet during operation, 2db in 1meter distance, it will not disturb you when you work or rest, and provide you with a quiet environment. 

5. Safe: zero ozone, no radiation, safer and healthier.

The negative ion generator can effectively absorb formaldehyde, solve the air quality problems around you, eliminate second-hand smoke and purify the surrounding air. Eliminate most mites, pollen, odors, smoke, cooking odors, and even PM 2.5 air pollutants.

Can be used in daily life, subway, public transportation and tourist attractions. Solve air quality and second-hand smoke problems, purification fully meets daily needs. Protect you from the yellow dust, fine dust and odor in daily life.