Apparently, sometime in the 1980s, TEAC – a legitimate, major, respected maker of audio gear – thought it would be a great idea to combine reel-to-reel loading technology with audiocassette frames.
Yes, it’s a compact audiocassette where you load the reels individually. And you can swap them out! I AM NOT EVEN MAKING THIS UP LOOK AT IT THIS IS LUDICROUS:
The selling point was presumably size of the little mini-reels vs. size of an entire cassette frame. But… honestly, how did this ever make it to market? Particularly given what a pain in the ass it is to actually load into a cassette frame and use. Watch the video, it’s pretty much hilarious.