Identify the Toy > Star Wars Ball

Poester Lipsink asks:

Can you tell me what this toy is and what it is supposed to do? This image is from a current eBay listing and the seller says it is a handheld travel toy? I purchased mine at a local Goodwill. When I put batteries in it and with earphones plugged in I hear Chewbacca growl and then the Star Wars theme song plays over and over with some intermittent “battle” and R2D2 sounds. If I move my hand over the “eye” it makes a “force field” hum noise. It is a 2005 Hasbro toy. I think it’s really cool as a paperweight but I wish I knew what it was really intended to do! Thanks so much!