[Product function]It mainly produces a large amount of negative oxygen ions, which can effectively remove small particles invisible to the eye in the air and eliminate second-hand smoke.This ion air purifier releases more than 10 million negative ions to purify the air to remove contaminants in personal spaces. It can effectively purify the air polluted by indoor air and indoor harmful substances thereby improving your mood and sleep. [Product advantages]10 million PCS/cm³ Negative ions exist in high concentrations in waterfalls, forests, and beaches, and have many positive effects on human physical and mental health. Negative ion breathing has a relaxing effect, relieves tension and brings you a good mood. Make you feel refreshed immediately. Among the advantages are: start to get better sleep quality, improved concentration, clearer immune system, reduced headaches and greatly improved body function. [Comes with lanyard]light weight and portable size, you can wear it all day without