I ordered 2 for 1 offer and for me .. I was very surprised when I opened the package I received because of the different speakers mini one presented above. Those received have the same characteristics of "grafted USB, micro SD but they feature in addition to a screen with a menu key, a play, a right, a left and walk on well-off., On the top, there has a sliding antenna for radio and an LED that changes color as the cube just for fun. This model is supplied with a wrist strap. It comes with a USB cable and a mini jack. By taking against no instructions are supplied with !! I contacted the seller to provide it in me. I managed to run them by trial and error. The radio stations are installed by themselves by pressing play on 1 to 30, and against the MP3 can be read in the order of recording on your media with just the opportunity to move forward or backward pieces. To move the sound, you have to hold down a little longer on the sidelines right or left, which also serve with quick support to move backward or forward recorded songs or radio stations. The menu button is used to select the source: USB, SD card, radio or LINE corresponding to the plug provided to connect the smarphone, the computer or MP3 player. The sound is very decent and even good and what surprises coming from such a small device. I do not have a reliable idea of the autonomy. So I removed one star for the lack of notice and I expect to see its autonomy. For the price, do not hesitate to do or have fun because it's still object cute and handy !!