This Yaz MP3 Micro Rocker is sure to be a hit. It features built-in stereo speakers 512 MB build-in memory SD card slot backlit LCD headphone jack repeat one repeat all and random modes 6 equalizer modes anti shock hold function stores hundreds of music files power with AC adapter (not included) or batteries. Includes Yaz MP3 micro rocker 512 wrist strap and USB cable Yaz MP3 Micro Rocker Music Player Amazing stereo sound 512 MB build-in memory SD card slot and backlit LCD Stores hundreds of music files Requires 4 AA batteries Brand is Yaz