Compact and powerful: This sleek Micro System packs 500 watt of total power to drive dual 8" 2-way Speakers. Bluetooth: Enjoy convenient Bluetooth connectivity with compatible devices and stream audio. USB/SD Connectivity: Listen to music saved on up to two different USB/SD card media devices and bring your stored music library to life. The convenient front USB and SD inputs can be used playback MP3 music only. FM Tuner: A built-in digital FM Stereo Tuner with 16 station preset memory (16 FM)