Here's an old/early item the "Sonic Headphone Am/FM Radio"
What's an even rarer sight is that it's mint in the package here (clamshell), from some point in the early 1990s.
But look specifically at the color: It's purple. And not JUST purple, it's a specific shade of it that other early electronics share WITH some of the early party supplies too. What is it about this certain shade of purple+Sonic that the company liked. Is it the same people behind all the electronic items with this color as well as the party supplies? (that'd be odd)
It's a look back at older technology too, because you can see how klunky the set is, plus it claims "Light Weight" (because heavy radios were an actual issue when this was made) Also "AM Radio", it used to be more of 'a thing' while it is mostly dried up now and FM got monopoized away by commercial-mongering fat-cat companies & song-recycling boredom. When this was made, regular radio was actually desirable to have around.

The package has thumbs up running Sonic between the headphones, classic logo & checkering. The actual item has the classic logo on one side...but does it have Sonic graphics on the flat part of the headphone? (It ought to--otherwise it would be a 'minimal effort/low-branding item')
If it's only turning up in just 1 photo in 2020, it must never have been a common item when it was made. Maybe it was pricey or it didn't get a great store release.