Priced at $350, Sony’s Rolly “Sound Entertainment Player” not only grooves to music, but also includes 1GB of built-in memory and Bluetooth. Video after the jump. First picture in gallery.

..apparently you can also choreograph it and share your Rolly moves with pals over the internet. A full charge gets you five hours straight music, four hours of dance and music, or three and a half hours dancing, music, and Bluetooth use together

[via engadget]