Sony WatchCube KVX-370 : The rarest 3.7“ Indextron

[Message received, the audio levels are not ideal, I have Re-Uploaded that video here with edited Soundtrack and in 4k for a better experience: ] Quick presentation of an extremely rare Indextron Portable TV. The KVX-370 is a Beam-Index tube from Sony, a unique portable color TV set. Edit: Regular color tubes have 3 Cathodes (not 3 electron guns as I mentioned)