Mini Portable Clip-On USB Speaker for Mp3 Phone Music Player Laptop PC Notebook Speaker System2.0 Speaker Power RatingW:2W+2W Stereo;Power InputUSB Supply~5V500MA50Hz;Input Connection3.5mm Audio Interface Speaker Unit2 X 40mmNdFeB high-quality speakers 4 ohm;3.5mm audio jack Dimension603035mmcable 1.7m Package included:1 Pair Notebook Mini Portable USB Speaker