Mini Tourism music MP3 speaker 1.suitable for the computer,PDA,, ... ,MP4,the U plate,the SD card. 2.Small size Mini Tourism music MP3 speakerModel number:MA81221.Digital MP3 Player: TF ... MP3, MP4, mobile phone, PC, etc. 5.External high-performance rechargeable lithium-ion battery. 6.Multi-function keys: volume, selections, modes can ...