Hello, I am the owner of a product SENA (the SC1 Advanced for Schuberth). I discovered, after purchase, that products SENA offering the RADIO did not allow to have the vocal instructions of the telephone by Bluetooth resulting from GPS application or other. So, if the radio of the intercom is swithed on, you cannot have of road guide, informations of safety or informations resulting from your telephone by this way. The instructions are completely inaudible. Thus SENA prioritized the radio with regard to the information of safety for the motorcyclist. In 100 additional euros to have this ra