New design mini digital sound box Input Voltage: 5v Support: TFcard , Mobile card,mp3,wma player FM radio ... the battery protects the electrocircuitIt can be used with computer, mobilephone,mp3,mp4 and various players ... Function:Perfect stone Disk U , TF card,mobilephone card, mp3,mp4,wma docs playerAux Mode can ... Press mode key the controlpanel,canshift FM and CARD.3. MODE Mode coversion4.VOL+ short ...