Feature:It is mini portable that you can easily use it in your car at home、 office、 outdoor places ect.Built-in microphone for hands-free phone call.Support TF card/micro SD card 、can play MP3 format files in the TF cardModular'buddy-jack'design:connect a row of Mini Speakers to get jaw-dropping audio performanceBuilt in rechargeable battery、charged by computer via USB interface.Supports most devices with wireless Bluetooth function、such as smartphones、tablets、MP3 MP4 playersPackage List:1* Bluetooth Speaker1* Audio and USB charging cable1* User manual 1* Retail box