Portable car jump starter with multiple function of power bank,can offer power to inflator pumper ,USB2.0 output.4LED battery indicator,Built-in 1W LED light, with illumination, SOS and flash light 3 modes. Built-in big current protection system, reversely connection, short circuit protection,Aligator clamps with big current protection system,battery over charge and low voltage protection,Over load, over voltage, reversely connetion protection