The Raina USB powered 2.1 speaker system can be plugged on to any computer set up for quality sound with deep bass effects. This sound system set does not need wall power and can be connected onto your PC or laptop USB port to get an enhanced experienced while gaming, watching movies or listening to music . This speaker and sub woofer set comes with a headphone jack to connect your headphone to the speaker. Its a brilliant accessory for outdoor and indoor entertainment. Black. Compact 20 Watt, USB powered speaker set with subwoofer. (10 Watt RMS) Volume control and power switch on the back of the subwoofer. USB powered - no wall power needed. Quality sound with a deep bass. USB connection. Easy install. Plug and play. Speaker information. Subwoofer 10W. 2 x 5 watt satellite speakers. Total power output 20W. General information: Manufacturers 2 year guarantee.