Features:Small 2.1 Speaker System delivers rich ,clear stereo sound. Built-in bass diaphragm to provide strong bass performance.Built-in blue LED light, which create a romantic and relaxing party/Music/games/movies and video ambiance.There are 3 controls Knobs at the front of the Subwoofer for easy to Independent adjustable total volume & treble & bass.Powered entirely by USB and connected to your devices via a universal 3.5mm AUX-in cable, directly into your computer for portable convenience.The sound bar supports most of the devices with standard 3.5mm jack. Compatible with PC, Computer, Laptop, Tablet, Smartphones.(Need USB Powered)Specification:Brand: SADAModel: D-222Type: Desktop SpeakerMaterial: ABSColor: BlackSignal to Noise Ratio: ≥65dBFrequency Response Range: 25Hz-20KHzLED Indicator: Blue light indicatorOutput Power: 3WSound Channel: 2.1Package Size: 24 * 17 * 13cm / 9.4 * 6.7 * 5.1inPackage Weight: 756g / 26.7ozPackage List:1 * Subwoofer2 * Speaker1 * User Manual