1,bird speaker,mobile phone speaker 2,mp3 speaker 3,do your own logo 4,Promotional gifts 5,many color 1,bird speaker,mobile phone speaker2,mp3 ... , MP4, many kinds of music player, with standard video input plug2, The sound is nice3, 2.0 Speaker, ABS material4, 3.5mm ... put inside the pocket for outdoors.6, USB connecter, can connect with computer and play music.7, Built-in Li battery, the ...