Features: 1.Advanced Technology: Adopts semi permanent photocatalytic filter and a number of high tech photocatalyst technologies, high efficiency filtration systems and other technologies. 2.Efficient: The purifier can quickly decompose harmful gases, effectively remove peculiar smells, smoke smells, adsorb dust, etc., and effectively improve indoor air quality. 3.High Efficiency Particulate Air Filtration Technology: Activated carbon filters can capture pet hair, dander, smoke, dust particles, etc., removing air pollutants as small as 0.3 microns and preventing respiratory problems. 4.Quiet Operation: In sleep mode, the fan speed is reduced to the lowest setting which is as low as 30 decibels, creating a relaxing indoor environment while still providing effective purification. 5.Convenient: The purifier can be used for home and car use, and the USB C interface and portable design make it easier for users to move and use to meet the needs of different occasions. specification:Item Type: Air Purifier Material: Aluminium alloy Input Interface: USB C Input Voltage: 5V 1A/3.5W Product Size: 67x168mm/2.64x6.61in Purification Method: Photocatalytic oxidation PackageList:1 x AirPurifier 1 x USB Cable 1 x Manual