2.0 USB powered multimedia speaker system for laptops, desktops & smartphones. Power input is DC 5V via a USB port, Audio Output is through a 3.5mm audio jack which can be connected to a desktop PC, Laptop or a smartphone too. 2 speaker units with 3W RMS each provide a powerful output total of 6W RMS, Each Speaker Unit driver is 50mm in diameter, Frequency Response: 60hz-20khz. Wired volume control, Enhanced low frequency effect, Powerful bass & Superior listening experience. Box Contents: 2 wired speakers with wired volume controller & USB power input and 3.5mm audio Jack output, 1 year Warranty unless physically damaged.