The Philips AZ100B Sound Machine is a handsomely black, portable CD Player and FM tuner. It can play CDs, CD-R, and CD-RW discs, so whichever disc formats your recorded music is stored on, the AZ100B can play them and produce terrific, CD-quality audio. With 3.5 mm input, you can also connect an MP3 player and enjoy your MP3 music collection played through the AZ100B's built-in stereo speakers.