memory capacity: 8gb product type : mp3 player storage type : flash memory display type : 2" qvga (320x240) tft lcd embedded mic : yes output power(@16 ohm earphones): 20mw/ch features : fm radio , view picture, view text , voice recording , view video , datacasting battery playback time (audio) : up to 30hrs audio playback battery battery playback time (video) : up to 4hrs video playback battery charging time : (pc) 2.5 hours ; (adapter) 2.5 hours video storage capacity : 14 hours dimensions w x h x d : 41.5 x 96.0 x7.9mm ; weight: 43g functional features : file format supp: wmv/svi/jpeg/mp3/wma/txt (* wmv, mpeg, jpeg, mp3, wma, txt) fm recording : yes ; voice recording(bit rate) : 128kbps sys connectivity : os compatibility : window vista, xp usb connection (mtp/ums): ums ; usb host: no connectivity (usb version) : usb 2.0 additional features: * adjustable play speed , * album art,