This listing is for the light unit only for a Panasonic electric assist bicycle. As shown in the attached photos, the light has been tested and confirmed to be working. I have checked all the functions, but please understand that this is a check done by an amateur. This item is sold as-is, so please refrain from purchasing if you are concerned about minor details. Therefore, please make your judgment based on the photos. If you have any concerns, please feel free to ask. I will upload photos of any areas you are interested in.