This portable air Purifiers for car comes with USB C cable, which can be power by car charging adapter and computer Negatively ions can purifying the air, provide nice indoor environment, help people relax and improve It can filter improve air and protect the health of you and your family Enjoy a quiet, peaceful environment, perfect for bedrooms and work space. this air cleaner is so quiet, you can run it throughout the night and sleep well The air Purifiers 2 adjustable fan speeds to meet your specific need. Ensuring a peaceful environment ideal for sleep or working