Features 2.4GHz wireless digital stereo 1:1 transmission Rich,Powerful Sound with 3D Surrounding and excellent bass effection Specification:-Speaker: 1.5” 20w tweeterX2;2.4” 20w wooferX2 -RC of power,Vol +/-,Play/Pause,FW/PR of player in PC -Transmitter distance: indoor approx 20m,outside approx 40m -Waterproof -2.4G digital wireless transmitter/receiver Solution -Good sound with Sub woffer -Good ...