DESC: Ever thought about playing your entire music collection while on the go? The Tamarack G 20-A MP3 CD player brings music to relax your busy lifestyle. You can customize the favorite songs in the introduction mode. Listen up to 150 MP3 files from your CD-R or CD-RW on this marvel. Best of all with its advanced anti-shock protection you can listen to your MP3s skip-free even while you're exercising. The G 20-A plays audio CDs too! It is portable, easy-to-use, and uses cutting-edge technology that provides hours of non-stop music in a single unit.