Rio se510 512 MB MP3 Player Includes - Rio SE510 / Sports Clip Earbuds / USB Cable / 1 AAA Battery / Rio Music Manager and installation software / Quick Start Guide / Warranty Card 512MB Built-in memory holds up to 8 hours of music or approximately 120 songs Windows 2000 and XP plug&play friendly, it has a built-in USB 2.0 interface port for fast file transfer 5-Band adjustable equalizer with presets Easily drag and drop music and data files