The USB Air Purifier helps to remove 99.95% of contaminants including pollution, allergens, dust, pollen, and more! Breathe easier with Wagan Tech! Being USB powered, you can use this anywhere there is a USB port; in your car, on your computer desk, dorm room, in a hotel room, in the office, or in your RV... basically anywhere it is needed! Micro-USB Powered HEPA H13 Filter UV Disinfecting Light Air Ionizer Compact, Aluminum body