this little device is made from the concept and the quality is good. Unfortunately, the station is so weak that I just turned and a positioned exactly with the transmitter on the speakers have received in the next room. So the 10m high are stacked through walls and around corners something! Otherwise, the quality of transmission depends only on the headphone output of the device used. From nothing comes halt even less. Very good I think the trickle charge over USB port while the transmitter further transmits!