Electrohome EAMP100 4GB MP3 WMA WAV Player with FM Radio, Integrated USB and Voice Recorder Peak sound performance of 104 dB for enhanced listening experience Store up to 1,000 songs with 4GB memory Integrated high-speed USB connector for easy drag and drop of files All-in-one media device supports MP3, WMA, and WAV files; FM radio; USB flash drive; digital voice recorder; and 6 equalizer settings Enjoy 10 hours of continuous playback with a single AAA battery