WARRIOR BT give you the perfect sound with extra added option. Bluetooth to connect with your mobile phones very easy to pairUSB Flash Drive simply save songs in your flash drive and plug in to the speaker and enjoy the music.SD Card simply save songs in your SD card and plug in to the speaker and enjoy the music.FM Radio you can listen to your favorite radio stationRemote it gives you the ease to sit back on your couch and control the speaker.