PANASONIC Portable MP3 Player Records and Plays MP3, AAC & WMA files that you can download from the Internet About 30 hours of play with 1 AAA alkaline battery (not included) Includes replaceable 64MB SD Memory Card Recording Time (64MB) - About 64 Minutes (128kbps); About 86 Minutes (96kbps); About 129 Minutes (64kbps) Controls - Play/Stop; Skip/Search; Volume Up/Down; Play Mode and Hold/Mode/Normal Switch