Phtronics Wireless Bluetooth Speaker with 4+ Hour Playtime Rechargeable Battery Life, Enhanced Bass, 2 Speakers, Powerful Sound & Portable bluetooth speakers for MP3 Players, Smart phones, Tablets & Many More Devices--Black Supports wirelessly playing music by wireless Bluetooth, playing music of the TF card and the MP3 / WMA format files of the U Disk High-performance of anti-interference, high-speed data transmission and high-efficiency; High-performance speakers and built-in microphone that deliver clean and great sound quality Integrate the Bluetooth Speaker, TF Card reader slot and USB port; The wireless Bluetooth stereo speaker let you enjoy music from all Bluetooth-enabled devices, such Smarts Phones, Tablet PC, NoteBook, Laptop, etc. Also Supports play the music from the external devices (connected via audio cable such as, MP3 / 4, Desktop, laptop, NoteBook, etc. (You need press the Play / Pause button to switch AUX mode) Easily control Pausing / Playing, adjusting the volume, previous / next songs, etc. Powered by a included Micro USB charge port