Sony NW-E305 Walkman Bean 512 MB MP3 Player Blue Uniquely shaped flash memory digital audio player with FM radio 512 MB built-in flash memory stores up to 345 songs (in ATRAC3plus format) Built-in, hidden USB plug enables direct connection for transferring and charging Internal rechargable battery provides up to 50 hours of battery life Compatible with MP3, ATRAC3, ATRAC3plus, and unprotected WMA and WAV files