Cigarette lighter powered massagers

From the cigarette lighter

— operating through a car cigarette lighter socket, or a similar auto socket, these massagers are primarily found in chair covers, offering the convenience of in-car use. Particularly beneficial during extended journeys to counter discomfort in even the most comfortable seats, it's important to note that using the massage function while driving is strongly discouraged as it can pose a distraction. Additionally, the power source is often not limited to the cigarette lighter and is typically combined with mains power (see the relevant paragraph).