System memory:64/128/256/512(optional) -MP3 player &USB drive & digital recorder function -Supporting:Win98/Me/2000/XP -LCD with blue backlight and lyric synchronous display -Surface: Special NM glass -Voice recording： 36 hours (128MB) --Multi-format music effect -Play mode: A-B -Allows 8-10 hrs of continuous operation with a ?AAA?battery Package size:15cm/13cm/4.5cm -Size:85mm/35mm/25mm -Color：red；black；silver；white；blue Accessories : Neck Strap Earphones / PC Installation CD / AAA Battery / USB Cable / Manual