70mai Air Purifier - compact portable air purifier, suitable for cars. Filters dust particles, cigarette smoke and PM2.5 microparticles. Filtering speed: 30m3/h of air, so the air in the vehicle is filtered up to 10 times per hour. Four modes - silence, standard, quick and automatic. Can be connected with mobile app 70mai. Status LED indicates air quality. Power supply via USB connector. Replaceable filter.