flash memory capacity : 4 gb display screen : 1.8" display type : tft lcd display resolution : qcif (176 x 220) output power(@16 ohm earphones) 20 mw/ch (5 mw/ch - fr) time: battery playback time: (audio) 25 h , (video) 4 h music storage capacity(@128kbps mp3): 60 h video storage capacity(@128kbps mp4): 7 h 34 m system : os compat: xp, vista (+2000, me: ums) connectivity (usb ver): usb 2.0 ; usb connection(mtp/ums) ums, j(mtp) system: file mgt: mobile playlist(favorite), library( artist, album,genre,title db sorting); file navigation system: sound effect : user eq ; custom : multi-language file format: supp mp3, wma, mpeg4(svi), ogg (ums only), jpeg, txt recording: fm recording