Enjoy your favorite music on the go with this versatile portable CD player. It supports CD/CD-R/RW MP3 disc playback and features 20 programmable memories. With Electronic Shock Protection (ESP) providing up to 50 seconds of anti-shock, your listening experience remains uninterrupted. The Playback Resume Function is perfect for audiobook CDs, while the X-HyperBass Low Frequency Enhancement Booster delivers rich bass. The player includes a rotary volume control with a digital high-volume limiter, a key lock function, and a high contrast alpha-numeric LCD. It also comes with a stereo earphone jack, built-in micro-USB port, and can be powered via micro-USB or AA batteries. Accessories include metal in-ear deep bass earphones, a zipper case, a braided nylon micro-USB cable, and two NiMh rechargeable batteries.