Portable USB TF card mini speaker AUX input: connect mobile phone.computer.MP3 player , audio device etc. ... radio;* Directly connection tocomputer, MP3, Mobile phone,audio device etc;*Support Micro SD TF card , the ... :high-capacity battery and allowable change ,available USB chagerPerfect sound: Bass speaker, beautiful music FM ... Search Channel Earphone output Portable USB TF card mini audio speaker