About the base 1.Because the base is specially customized according to the car modelPlease make sure that your car is exactly the same as the car in the picture/video.2.The base has a 17mm swivel connector that can be attached to most phone holders. You can change the phone holder according to your preference.3.The base can be easily installed and removed without damaging your car. We provide videos of the installation and use of this base. About the phone holder 1On board gravity sensing support. Gravity lock,only stability,can not be lost. Anti shake silica gel reserved mobile phone pre key position.Silicone damping and anti shake design,Prevent the mobile phone from shaking and scratching and provide shock-resistant cushioning. Full of security filling while using.There is no magnet inside which does not affect the signal. A charging port is reserved at the bottom and the navigation is not powered off. Small and light. About the phone holder 2Mechanical locking phone holder. Mirror gla/One key open/Crisp chain sound Mechanical structure clamping arm contraction clamping.The new generation bracket adopts the full mechanical principle no need to plug in,clamp and lock the machine. Lock the phone with one hand.Comfortable and convenient the retracted clamping arm does not rebound.