USB Mini Portable Air Purifier Necklace Wearable Personal Anion Negative Ionizer Product Feature Portable air purifier can be adjusted in two modes and can be used for 30-60 hours after charging. You can adjust according to your own needs to achieve the most right effect.No filters to change,a Type-C USB charging cable,and a pocket clip for easy carrying. Air purifier is generated by electrolysis internally,and then release negative ions from the top of the brush.The excessive long brush may cause electric shock,but our small air purifiers has been optimized and upgraded,so we don't have to worry about static electricity at all. This mini air purifier necklace can form a microscopic health shield.The negative ions produced by air purifiers are effective for pollen, dust, second-hand smoke and other air impurities. 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 with a complex environments.Let fresh air stay with you forever. This wearable air purifier is small and light-weight,the negative ion generator does not need to be replaced for life,and it is very suitable for children,students,elderly and other people.You can take better care for your family! Package Included 1 x Portable Air Purifier Necklace