If you have any doubt about how it works, you have a help that will allow you to become an expert in a very short time. Main features: - Light the cigarette lighter or extinguish the flame with your finger - Select from flame color - Concert Mode - Turn the iphone and you'll see how the flame moves from side to side, and you'll even see smoke on the screen. - Increases or decreases flame power - Slide your finger to the right or down to close the cigarette lighter cap. - Slide your finger to the left or up to open the cigarette lighter cover. - If you have doubts, the app has a quick guide to know how to use it What are you waiting for to download it? It's free!