beginner in this technology (Bluetooth) my phone well recognized but the speaker wondered code, I have finally found it was "0000" with the documentation of a bluetooth headset. It's a shame not to put a minimum of doc. The radio operates but the choice of stations is not yet clair.Là a doc would be welcome. Otherwise, the sound is good, unless it is pushed in. A sound signal announces the operation (Line in, radio, Bluetooth, or memory card) defaults to power, it is the memory card is read. For radio, the cable must be connected because it serves as antenna; it's not very elegant.