Hi, I just wanted to report briefly times how I came to mymusic Bluetooth and what the device can. It is important for me that the device is small. And that's it. The other, which I had looked at all the work twice as big and I did not want to. Cool is also this Unlike other has a built-in battery! I want the part in car use at my great-old radio at times finally to be able to listen to mp3s while driving. Radio pulled out and off a connected the supplied cable with the white and red plugs, pairing the Samsung Galaxy S3 and ready. Could the piece already well over 4 hours listening to music on the built-in battery. But actually I use it always via the USB port which I also brought over a car charger for the Zirgettenanzünder habeich finds super !!!