Received in a very short time, just before a rather long journey with children ... Great! Helmets are corrects.l'autonomie a movie and a half but works fine with the cigarette lighter. It is regrettable that the provided plug is not the USB model which enables the use of other devices into the cigarette lighter ... But the sound is OK, the picture is good, it is the principal. For those at the instructions in English and German inconvenience, you will find in French here: [...]) A good buy, we will see the time now.