Havit HV-SK473 USB 2.0 Speaker is distinctive cube-shaped that literally fit in the palm of your hand.You can surround yourself with the perfectly balanced music and also get surprisingly rich sound from this speakers. HV-SK473 speaker  accept sound input from various audio devices such mobile phone, laptop and MP3 player can also be connected to a DC power adapter.Featuring an USB cable for power input, these speakers can operate from the power supplied by the laptop.