... notebook, PC, MP4,DVD player, and any portable audio devices by the stereo jack output 1.Compatible with USB and ... stereo speaker2.Extensive application3.It is a good ... , PC, MP4,DVD player, and any portable audio devices by the stereo jack output. 5.Built-in high-capacity ... .12.Ideal for gifts and promotional items. Portable MINI Speakers with U disk and SD card port