This was a 2.25 MB mp4 file, but you can’t upload that to lemmy of course - but you can cut shitloads out and convert to a 4 MB gif - which it’ll accept and turn into a webm file, so Christ knows how it’ll play on various clients.
Anyway, the vid is nicked from here
They’re “augmented reality” so you can effectively see through them but you can run apps inside the display at the same time.