Bullet Points: 1. Built-in Lithium Battery: The electric USB car phone holder has a solar electric built-in lithium battery. Solar or USB charging. And the electric touch button automatically opens and closes. 2. Suitable for: Range 4.5-6.5 inches wide,which is suitable for most mobile phone models. 3. 360-Degree Rotating: 360-Degree rotate easily and adjust the viewing angle you want. The angle of the bracket can be adjusted as desired, and the screen can be selected from 360 degrees. 4. Wide Application: Wide range of applications. Most types of vents are supported, but round vents are not supported. Installation Instruction: 1. Take out the main body and the fixed bracket from the package, unscrew the nut, install the screw ball of the bracket into the screw mouth and then snap into the screw of the main body, tighten the nut before use. 2 Clip the device clip to the air outlet end of the air conditioner or place it in other places where it can be clipped. 3. Adjust the solar panel to an appropriate angle to make it receive the sunlight to the maximum extent. 4. The red indicator light is on, indicating that it is charging. (Solar charging and USB charging are both lit up in red). 5. Tap the side button to open the clamp arm, put the phone in the holder, and touch the panel to close the clamp arm button to tighten the phone. 6. When taking out the phone, you need to touch the side opening button, it will automatically open and take out the phone.