... mp2, mp3, wma music fomat 2) supports lyric display with music, a-b replay function, voice-recording / replay 3 ... ) the sound can be recorded with microphone and saved as wav and act file 4) ... 's a optional functions, if you choose it, the price should add usd 1.2. ) 8) variable models, ... writing. Using facility 14) low-consumed power. The battery may be used for a long time 15) hi- ...