--【Power Anion Generator】Our personal air purifier necklace can release up to 20 million/cm3 of eco-grade negative ions, quickly absorb airborne particles, Purifies air, eliminates dust, isolates germs, isolates allergens --【Quiet Mechanism】This ionizer air purifier necklace uses high end components that works in a minimal noise that serves as a big advantage if you don't want to get distracted while wearing an air ionizer. --【More Safe】No sharp corners, no radiation, can be used by babies, children and pregnant women, enjoy fresh and comfortable life, relieve the increasingly bad air pollution --【Rechargeable】380mAh capacity battery, USB port charging in 30 minutes, fully charged for about 15 hours of continuous use, to meet the daily use on the go --【Wide Use】This personal air purifier is simple and compact. It can be hung around the neck or on the car. It is very fashionable and can be used in car, office, subway, airplane, bedroom and other places