... mp3 pencharacteristics1, digital Recorder2, MP3 player3, flash drive4, Wirte pen, lead replaceable5, listen to FM radio6, is the business office ... 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 on a dedicated tricolor luminous indicators used to indicate LuYinBi different ...