This is a Stereo Cassette Player. Notice the grayish purple top there, that's a sure indicator that the same company that made ALL of the other old electronics with that purple on them, made this too. You can see their other items scattered throughout these early electronics pages.
There's a relief/raised Sonic grabbing a ring (is it a speaker?) & a band of checkers. There is a random Green Hill palm tree there in front of the ring too. The classic logo looks like it is raised too. The buttons on top are red. It is missing the cord & headphones that all these old players came with. The back likely was undecorated & would probably have a belt clip of some sort.