1. Small and portable: in , solve the surrounding air quality problems of subways, public transportation, tourist attractions, and purify the surrounding air 2. Function: It can purify the air in the space below 10㎡, release 20 million negative ions, meet , reduce air pollution, shorten charging time and extend standby time. 3. Easy to use: Long battery life, USB charging can last up to 15 hours, can be used at any time. Compact design is easy to use 4. Radiation protection: It can be safely carried: negative ions can effectively neutralize the electrostatic radiation of and computers, forming a protective layer of negative ions, effectively reducing the damage of radiation to the skin and eyesight. 5. Super soft and silent: the silent effect of the working mode without interference Specification Description: Function:disinfection Power supply: USB Application area: below 10㎡ Filter type: none Working principle: negative ion Colour: Blue Material: ABS Size: 66 x 26 x 16mm Package