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: SADA Model: D-222 Type: Desktop Speaker Material: ABS Color: Black Signal to Noise Ratio: 65dB Frequency Response Range: 25Hz-20KHz LED Indicator: Blue light indicator Output Power: 3W Sound Channel: 2.1 Package Size: 24 * 17 * 13cm / 9.4 * 6.7 * 5.1in Package Weight: 756g / 26.7oz Package List: 1 * Subwoofer 2 * Speaker 1 * User Manual