... card,or U disk,mini SD card,TF card directly. Portable speaker: Features: 1.Putting DC5V adapter with the DC5V port ... connect to computer,MP3,MP4,laptops,NOkia phones,Sony Ericsson mobile phones,CD and other audio output.If the customer request ... battery,needn't use the electricity of the mobile phone,the battery builted-in can work for 3-5 hours Portable mobile speaker