Durable MaterialHigh quality ABS material on the surface, durable and good insulation. Copper material to ensure the best quality and safety protection. Working current: 500A. Advanced Intelligent Protection The smart cable has built-in 5 safety protections against short circuit, reverse charge, over discharge, reverse polarity and over current. Anti-recharge function stabilizes the circuit to prevent the car equipment from being damaged due to the high current when starting the car. Insulating material, safer and more practical. Please confirm that the appearance of the product is complete before use. Instructions for use: 1. Connect the red and black battery clamps to the positive and negative of the car battery. 2. Insert the plug of the battery clamps into the starting socket of the starting power supply. 3. Turn the automatic key to start the gear shift to start the auto. 4. If the auto cannot be started, turn the key after several seconds until it starts successfully. 5. Then remove the plug of the storage battery from the starting power supply and remove the clip from the auto battery. Package includes: 1 * Smart Jump Starter Cable