It retains the function of the original car to manually control the storage and expansion, so that when the through a , the can be pulled to the storage position, the viewing mirror is retracted, and after passing, it is pulled back to the extended position and the rearview mirror is expanded. Features - Color: Black. - Material: Plastic. - Size: 8.50X4.50X2.30cm/3.34X1.77X0.90 inch. - Working voltage: DC12V±3V. - Quiescent : <=5mA. - The system can unfold the side mirror automatically when opening the door before igniting the car. - Auto folding/unfolding, effective anti-scratching and anti-collision. - Overload protection, if the door is closed/opened too frequently, the system will stop to fold/unfold the side mirror to protect the motor of side mirror. - After installation, it will not affect the operation of the rearview mirror control of the original car. - It is manufactured with professional technology to ensure the of the product and can work for a long time. Package list: 1 side mirror folding system