... world1) Touch keyboard, metal case Size: 42 * 14 * 7mm2) Support MP3,WMA,WAV,VBR audio formats3) Digital record function4) Low power ... record function8) Color: Black/Blue/Green/Red/Silver9) TypeFM / Recorder/ MP3 Player11) System Requirements: PC, Notebook or Macintosh with USB port ... /2000/XP and Linux2.4/ Mac OS9.0 above necklace mp3 players