7 color lighting FX with music synchronized light display Bluetooth 4.2 Aux in FM Radio USB playback MP3 playback 2.1 speaker Satellite driver size: 2 x 2.5″ Satellite impedance: 8 O Satellite output power (RMS): 2 x 3W Subwoofer driver size: 3.5″ Subwoofer impdance: 4 O Subwoofer Output power (RMS): 6W Total system power: 24W Pure system power (RMS): 12W Frequency response: 40Hz – 18 KHz