Apparently these are headphones. I gather the arms are headphones that you can pull out and the body is a carrying case of some kind that you can clip on your shirt. Cute? I guess. Practical? Not so much.
The Sega mu-bot headphones will be out in Japan come April 21st for about $25.
DISCUSSION
Looks like Marvin the Paranoid Android from the movie version of Hitchhiker Guide.
I think you ought to know I'm feeling very depressed right now...