Completely portable with numerous audio options, the Edifier MP211 speakers provide a compact audio solution for any occasion or location. Users can easily navigate between the SD card input, auxiliary input or Bluetooth input and simply change tracks or adjust the volume level. Connect any Bluetooth enabled device for wireless audio playback or pair with your Smartphone and use the built-in microphone for both audio and answering/declining/ending/switching a phone conversation. The Edifier MP211 speaker can be used as a personal portable audio companion or as an audio solution for a group of listeners via the full range speaker drivers. Compact and lightweight, the MP211 also comes with a micro USB cable to recharge the lithium ion battery.