Music Angel Mini Speaker Universal Portable Stereo Loudspeaker Support USB/Micro SD/ TF Card U Disk FM Radio (Blue) The 45MM full-range HiCO speaker makes the tone and sound prefect and the unique design makes the speaker stylish Made of grind arenaceous metal which makes the speaker durable and tough, anti-scratch and shock-resistance Multi-function: support USB, TF/micro SD ; Built-in FM Source of Power supply including battery and USB cable Mini audio box with new concept stereo portable mobile music;connecting your MP3, MP4, CD, DVD, iPod, iPhone, PSP, mobile phone, notebook computer, micro SD/TF card, etc.