This device has a sound absolutely very poor. This is not because it is aimed at children that we must do anything! I'm not talking about the internal memory size (128MB) which corresponds to 20 pieces: glass was gone around since there is not even a radio. And to put a 1GB SD card option, I leave it to you to find it in an antique shop .... I tried the helmet on my hi-fi and it is also involved in the degradation of sound. It is powered by batteries which means that you have not finished buying ... Beautiful ecological footprint. It would have been better to have a rechargeable appliance mains or USB interface. In short an apparent robbery, Mr and Mr Lexibook Spiderman lining their excavation because there are much better device for MUCH cheaper. Move along.