Speaker System: 2.0 Speaker; Rater power: 3W Maximum power: 3.5 W Impedance: 4 ohm Signal to noise ratio: 58 dB Frequency response: 20 Hz-20 KHz Distortion: 80 Hz - 20 KHz Color: Black, Black + Blue, Black + Red Specification Color Black Amplifier Internal Impedance 4 Ohm Power USB Power RMS (W) 2 x 3.5 System type 2.0 USB connection Power