... 3.MP3 player mp3 pencharacteristics1, digital Recorder2, MP3 player3, flash drive4, Wirte pen, lead replaceable5, listen to FM radio6, is the ... MP3 players, flash drive, write pen, FM radio five functions.Should the entire product length as same only ball-point pen.A pen is on four ... function keys, be used to operate recording, play the tape, MP3 function.A pen is ...