Description: 【Product Type】: Smart jumper starter clamp cable for 12V portable car starter. 【Premium Material】: The car battery jumper starter cable alligator clips adopt premium copper material, have good conductivity, are efficient and ensure a long time to use. 【Multiple Protection】: Intelligent automotive emergency booster clamp cable, build in short circuit, reverse charging, undercurrent and multiple smart protections. 【Reverse Connection Alarm】: The car jumper starter booster clamp cable has red and green two indicator lights. The green light lights up after connection, indicating that the connection is correct. If the connection is incorrect, the red light lights up and will sound an alarm. 【Easy Installation】: The smart jumper starter clamps are easy to install and connect, the red connects to the positive, and the black connects to the negative, fast and convenient. Specification: Product Size: Total length 40cm/15.75inch Clamp 10cm/3.94in Power interface 2.5cm/0.98inch Material: copper Package Includes: 1 Smart Jumper Starter Clamp Cable Note: Please allow slightly errors 1-2cm differences due to manual measurement.