... appropriate for mp3,mobile phone, notebook, PC, MP4,DVD player, and any portable audio devices by the stereo jack ... appropriate for mp3,mobile phone, notebook, PC, MP4,DVD player, and any portable audio devices by the stereo ... flash drive,SD card,MP3,mobile phone,PC, notebook.10.With on/off power switch11.No need ... 12.Ideal for gifts and promotional items. Portable MINI Speakers with U disk and SD card ...