Blind Spot Mirror solves dead angle zone of sight perfectly.You could adjust the angle of reflection freely.You can look side car mirror and support mirror at a glance.Notes:Wide Angle View Mirror can not function in case it is attached others than on the side mirror.Excessive adjustment of angle might cause the breakage of the product.Fold the side mirrors inside when cleaning the car with auto matic cleaning system.When attaching or after attaching, excessive pushing the mirror face might break the mirror and hurt hand.Do not handle the Car Viewing Mirror while driving as it is dangerous.Incidents, breakages, or malfunctions due to misuse would not be guaranteed, and we are not responsible for it