iKross Compact Bluetooth 3.0 Stereo Speaker with Build in Microphone/Support USB Flash Drive, Micro SD Card Playing/FM Radio Function iKross Multi-play Function bluetooth 3.0 Audio Speaker Support Bluetooth, 3.5mm AUX input, FM Radio, USB Flash or Micro SD Card Music Playing Rechargeable built-in lithium battery offers up to 7 hours playback and up to 360 hours of standby time. Works with all Bluetooth-enabled devices: iPhone, Smartphones, iPod, tablets and more Package includes: iKross Mini Speaker, 3.5mm audio cable, USB charging cable, hand strap and user manual.