This product can be used to connect the socket of the car cigarette lighter, which will produce a large number of negatively charged ions (negative ions) to kill bacteria and counteract the unpleasant smell in the car. In addition, this product has two USB charging ports, the total output current is divided into: 2400mA, each port output current is 2100mA, and a self-rescue and escape with the car glass needle for emergency use.