1.Functions: automobile air pump, tire pressure digital display detection, automobile emergency starting power, sos light, flashlight, charging bank 2.As electric tire inflator and when the car is in a state of power loss and cannot be started, it can only be started by using the emergency power supply 3.Cordless rechargeable tire Inflator with LCD Screen 4.USB&Car charge: you can choose more convenient charging method at will,and you can use it while charging 5.Note: This product is used for 12V light cars