*supported file formats:MP3,WMA          *Communication protocols:USB2.0       *Digital frequency:24-Bit                 *Audio frequency response:20Hz-48KHz    *SNR:About 75db(1KHz)                     *FM frequency range:87.5MHz-108MHz                      *FM receiver sensitivity:86db uV                        *Output power(peak)20mW                *Channel separation:30db at 1KHz S.P.L          *Extermal power supply:USB5v/350mA      *Power(peak):40mA                       *Battery life(full):6 hours

* Mini SD card * FM radio * Wired headphone * Rechargeable lithium batterry