This item up for auction is a Backyardigans Backyard Boogie Radio from 2005.  It is in very good, used condition. See pictures for overall condition. 

Here is the actual product description:  Get ready to be a singing sensation!  This groovin' radio features five different types of music you can sing along to.  Grab the microphone and sing along to ska, disco, salsa, zydeco, and rock music.  Each of the five characters talks and sings with you as the light on the radio changes color. 

The microphone is in good working order, as well.  

This toy takes three AAA batteries.