Hugo Gernsback's "Teleyeglasses" — a portable TV you wore like goggles, with a tiny 2-inch screen for each eye. 63 years before Apple Vision Pro. It weighed 5 pounds and overheated.
This curio is written in original words for CurioVault. Facts themselves are not copyrightable, but our wording is. If you reuse, please credit CurioVault.co.