Havit SK490 USB AC Power Speaker Black features 3Wx2(RMS) output power. It comes with a 2.0 USB interface. It has a 3.5MM stereo audio input. It has a frequency response range of 60Hz-20KHz. It has a 4Ohm impedance. It is a professional speaker unit, advanced digital amplifier circuit, excellent sound quality with powerful bass. This product is suitable for laptops, PDAs, mobile phones, and MP4 and so on. and it is convenient to connect with other sound source equipment.
