The controls (volume +/-, title forward / backward tracks, play / pause, on / off) are all distributed around the bottom around. To attach to a backpack or trouser pocket is exactly right (open top) included with carabiner included, which I find very useful. Is the speaker in your pocket, of course you can not get more of the buttons zoom, but the entire operation is carried out after the connection anyway via the smartphone. Charged is the whole contained by cable via the mini-USB port. Also audio sources without Bluetooth can plug it, plus there is a 3.5mm audio jack and an appropriate cable. The also enclosed operating, although only in English, but the complete handling is basically self-explanatory anyway. In order to use the box as a smartphone speakerphone, it also has a built-in microphone with sufficient range, to move back and forth in the room during a call. My only criticism is that there is no exact information about it is obtained due to lack of display, as it is currently ordered by the remaining battery life. But otherwise, I can only recommend the mini speaker.