Specifications:LED illumination lightElectrical quantity indicator light. Emergency safety hammerEmergency seat belt cutting knife12V / 16V / 19V voltage output indicator lights12V / 16V / 19V --- 2A / 3A / 3.5A outputUSB 5V - 2A output12V - 1A charge inputMaster switch，Key switch.Battery Weight:1.3kgBattery Size:165 x 79 x 40mm.Package:1 x 50800mAh Car Jump Starter1 x Wall Power adapter1 x Cigarette lighter charging adapter1 x Cable8 x Connectors for Laptops1 x Four-in-one mobile phone adapter cable1 x Set of startup clamp wire1 x Carrying bag1 x User manual