This is a portable radio featuring Sonic.
While radios today can fit entirely into an ear-pice this one is about 4 inches on each side. It's bright and colorful, but the hot green speaker makes it 'loud' in more ways than one. The Sonic is just so-so, being that they've got his arm growing out of the colored chest-dot, and one of his fingers (pointing at the dial) is a bit off. It's interesting to see that they've made the area around the speaker look like a ring, to fit the theme.

With the cord on both sides, it could be hung up on a wall or worn like a giant necklace. The tuner is the big red dial, and the blues are the Band and volume. It was made in 1993 and took 4 AA size batteries to run.