It is an in-vehicle charger equipped with 2 USB ports that charge from the car’s cigar socket. You can charge tablets, smartphones, iPhones, etc. using the USB cable sold separately or compatible with each model you have. With a high output of 3.4A maximum output, it is possible to charge two smartphones and tablets at the same time and to quickly charge smartphones. It is shared by 12V and 24V vehicles (minus earth vehicles). With an energizing indicator lamp that emits blue light!