Portable USB TF card mini speaker AUX input: connect mobile phone.computer.MP3 player , audio device etc. Portable mini speaker Micro SD/TF card*Support FM radio;* Directly connection tocomputer, MP3, Mobile phone,audio device etc;*Support Micro SD TF card , the MP3 format in U disk *Colors:Black,Blue,White ,Pink.Application: Playing badminton/tennis/ball, yoga,camping,climbing mountain ,running ...