3 way speaker with front firing woofer for high-quality bass response, USB and SD/MMC:- Play's MP3, WMA file formats from USB drives and SD/MMC enabling 32GB memory storage.,BT and FM :- BT function to stream music wirelessly from BT enabled devices upto range of 10 meters. Built-in FM frequency range of 87.5-108 MHZ with 50 channel storage, General:- Full function remote control Dual Microphone jack