"BLUETOOTH Easy to pair with any Bluetooth device such as iPhone, Android smartphones & tablets. BUILT-IN FM RADIO Built-in FM Radio. Use this speaker as a FM Radio without connecting it to the PC. USB SUPPORTED Convenient access to your favorite sound, with simple USB Plug-and-Play. AUX INPUT Aux input enables audio connections from other sources, increasing versatility of system. SD CARD SUPPORTED Easy for commanding audio from your external storage SD card. REMOTE CONTROL It offers full function remote control for adjusting/changing output media and levels. DIGITAL DISPLAY Digital Display gives all information - Function, Volume, Bass, Frequency of FM and other vital information. SWIFT BUTTONS Swift buttons allow you to easy control mode, volume & forward/rewind track through swift buttons. "