Cassette tape watches, and their Cold War precursor

You may have seen pictures going around of this awesome cassette tape-styled watch. I happen to think the little written “Hour” and “Min” are butt-ugly, so I checked if there were any more like it without the scribbles. Turns out there are a couple G-Shocks that look suspiciously like cassette tapes, whether they were meant to or not. Then I got a craving for a real tape player watch. That’s impossible, of course, but there was this awesome spy watch with a hidden microphone and a wire that ran up your arm to a recorder.