Instantly show your feelings to other drivers without the need to open the windows! lets you show different gestures on your rear window use the remote control to realize three light types! Material: plastic + acrylic Comes with a remote control that requires one 12V23A battery, three AA batteries (not included). If it does not light up, please replace the battery in a timely manner. This product is for modified auxiliary lighting and cannot replace the function of the original car lights. Please confirm the product installation space before purchasing.