... USB2.0. U-Disk storage function.6.E-book, picture browsing function.7.Voice recording, game function,support ... stereo radio,loudspeaker (optional)7)Support synchronized lyric display 8)U-disc function,no driver required under Windows 2000/XP ... s manual Product specificationModelYT-0047Net Weight0.04kgUnit Size38.7×90.7×6.2mmOptional Capacity128MB-8GBOptional ColorRed,blue,black,silver,greenOptional ...