Craig CMA3015C 512MB USB MP3 Digital Music Player & Portable Foldable Speakers -Amplify Sound From A 3.5mm Audio Source! Craig CMA3015C 512MB USB MP3 Digital Music Player and Portable Foldable Speakers General Features: Elegant white design Compact design Portable music system 3-watt detachable stereo speakers Supports USB 2.0 connections MP3/WMA playback support MP3 Player Features: 512 MB built-in memory 1.2-inch LCD display USB 2.0 port Plays MP3 and WMA files 20 Hz ~ 20 KHz Audio Frequency 32 Kbps ~ 320 Kbps Supported compression rate