iriver U10 512 MB Music & Video Player Amazingly small multimedia player with 2.2-inch screen--about the size of a business card 512 MB memory holds 8 hours of MP3 and 16 hours of WMA audio Plays MP3, WMA, secure WMA, Ogg Vorbis music files; MPEG 4 SP video; Macromedia Flash Lite video games (six included) Integrated FM radio with record function, built-in microphone with voice recorder Rechargeable lithium-polymer battery with up to 28 hours of battery life