This Z-M810 Headset MP3 Player with TF Card Black puts out quality sound and good capacity. USB2.0 high speed transmission. This MP3 player is the most recent in an evolution of music formats that have helped consumers enjoy their tunes.                                    Features            New and high qualityDesigned fashionable and cleverish appearance, fine workmanshipHigh speed and ultra fastPlug and play directlySeparated earphone jack and power jack makes a convenient operation and faster transfer rate                                                            Specifications            Output power    2 *10 mW    <br>
Play Time    5 hours    <br>
Charging time    2 hours    <br>
Power Supply    Built-in 3.7V 340mAh Lithium battery    <br>
Connection Type    USB 2.0    <br>
Frequency    8 - 48KHz    <br>
Noise Ratio    95 dB    <br>
Capacity of External memory    TF Card or Micro SD card, up to 32GB    <br>
Support Format    MP3 / WMA    <br>
Support System    Windows 98 / 7 / XP / Vista    <br>
Dimensions    4.5 (Dia)    <br>
Color    Black    <br>
Weight    194 / 6.84oz    <br>
                                                            Package Includes            1 x Media Headset MP3 Player1 x USB Cable1 x User′s Manual