... high quality,perfect sound effect, 8.fast delivery,good service9.with led lights function FUNCTIONS:•sport bike mini speaker.•Built-in ... rechargeable Li-ion battery usb rechargeable sport bike mini speaker•With usb/tf slot pc mini speaker.•Accompanying usb rechargeable sport ... convenience, connecting to your MP3,MP4, CD, DVD, iPod, iPhone, GPS, PSP, mobile phone, notebook computer, Hi-fi speaker, U-disk ...