MINI USB MP3, SUPER SLIM, WITH CAP EASY TO TAKE OFF MINI USB MP3 -Simple design, slim design- Music format: MP3- Build-in memory- On/Off/Volume up/down and Next/Previous buttons- Can easy to be put on your key by a strap- 3.5mm audio socket1 * MP3 player1 * USB Cable1 * Earphone1*gift box Mini USB MP3 2GB, 4GB,8GB memory mp3