This car charger features a digital display to monitor the car battery voltage in real time. It has 4 USB ports with an indicator light, including a QC3.0 orange LED USB interface for fast charging. The charger supports various models and voltage inputs from 12 to 24 V. It also has safety protection mechanisms such as soft start, input over-voltage protection, and output over-current protection. The outer case is made of high-gloss material and is compact and stable. The package contains one car charger.