From the Manufacturer
The RioVolt SP90 is the simple solution for anyone looking for a versatile portable CD player. The RioVolt SP90 plays CDs encoded with MP3 and WMA (Windows Media Audio) files, as well as standard audio CDs from either CD-R or CD-RW discs. By supporting both MP3 and WMA formats, the RioVolt SP90 gives you the freedom to choose the quality and play time you desire, depending on the bit rate and compression method used during the recording. A CD full of WMA tracks can hold more than 20 hours of music!
The unit offers full ID3 tag support as well as CD Text, convenient encoding found on most new audio CDs. Plus, the large LCD simplifies navigation through song titles and menus. With 120 seconds of skip protection, adjustable EQ, repeat and shuffle play modes, programmable playlists, and a battery life of 15 hours, the SP90 delivers the rock-solid performance you've come to expect from Rio Digital Audio. A CD burner is recommended for full recording flexibility.