USB speaker Card speaker Portable speaker USB speakerCard  speakerPortable  speaker 

Features:  1) for use at the office, home, portable

2) You can enjoy sweet stereo sound produced 3) memory function, remember the file that played last time.4) It can be powered either through  PC,  AC adapter or batteries

5)Support TF,USB DISK, FM(Optional), lyric synchronization(Optional)

6) Frequency: 80-2000HZ

TF card portable USB speaker