Very glad to see you in my shop. Features: 1. 3.4A super current, which can be used to power mobile phones, tablets, navigation, GPS, etc. 2. The product is equipped with a color screen voltmeter more→, which can detect the use of the car battery at any time and prevent accidents caused by bad batteries. 3. The product is equipped with a charging power switch, which can be turned on immediately after use, which is more convenient to use. 4. The product comes with a voltmeter, which can detect the battery voltage status at any time to prevent potential safety hazards caused by bad batteries 5. The 70CM power cord fully meets the installation requirements. It can be directly installed on the