... ,Built in lithium battery, 4,MP3 Player 5,Print logo,engraving logo . MP3 Player specifications :1,MP3 pen has pen,mp3,FM and record functions2,vMusic ... formats: MP1,MP2,MP3,WMA,WMV,ASF,WAV3, EQ mode: Normal / Classical / Jazz / Pop / Rock / Soft / DBB4, Digital voice record and play ... Pen: could write when playing music6,Red LED light and green LED light indicates different state,easy to use.7, Housing ...