... bird shape speaker with3.5mm general autio interface , protable speakers with built-in amplifierSpecification:1, It can support computer, notebook, iPod, iPhone, ... MP3, MP4, many kinds of music player, with standard video input plug2, The sound is nice3, 2.0 ... for outdoors.6, USB connecter, can connect with computer and play music.7, Built-in Li battery, the battery can be used ...