... power,Vol +/-,Play/Pause,FW/PR of player in PC -Transmitter distance: indoor approx 20m,outside approx 40m -Waterproof -2.4G ... sound with Sub woffer -Good painted iron front -Accessories: 1XWireless USB Transmitter 1XWireless Receiver Speakers 1XInfrared Remote Control(direct angle ,15m) 1X5V ...