Bring to power of digital audio into the classroom with Hamilton's 2GB USB MP3 player. Now you can have your important documents and audio all in one pocket-sized device. The built-in microphone allows instructors to record curriculum, podcasts, student vocal responses, etc., and playback on any USB audio source. Download MP3, WMA and WAV files from the internet or from your PC. Powered by a single "AAA" battery, you save up to 8 hours of audio.