Packing: 2 12V car camera rectifiers. Color: black. Material: high-precision components and plastics. Size: 48mm*26mm*16mm. Note: Please do not purchase if your car is non-German Car Series, because there is different currents for different car series, non-pulsed signal interference, use this filter line is invalid. Features: The rear-view camera rectifier is sturdy and wear-resistant, easy to install, suitable for German cars, and used to provide a stable 12V DC power supply for the rear camera.