... .It is appropriate for mp3,mobile phone, notebook, PC, MP4,DVD player, and any portable audio devices ... power6.Easy charging: automatically charging after connecting with PC or via USB power adapter(not included).7.Audio ... : USB flash drive,SD card,MP3,mobile phone,PC, notebook.10.With on/off power switch11.No ... gifts and promotional items. Portable MINI multimedia speaker with U disk and SD card port