2 GB Slacker Radio and MP3 player with 15-station capacity. Compatible with Windows XP, SP2 and above (does not work with Vista). * Built-in Wi-Fi auto-refreshes Slacker Radio stations; music plays whether or not connected * Plays your existing music collection (MP3, WMA, and AAC) * 4-inch color LCD displays album art, reviews, artist bios and more * Removable, rechargeable battery