It adds, to my collection of retro computers and vintage electronics, a Polistil Pong console.
It is a videogame (a retrogame, since time has passed since its release) of 1978. It was kindly given to me by close friends.
Using the two built-in controllers, you can play four games: Tennis, Football, Squash, Pelota. Games do not load from external cartridges, because they are already included in the chip inside the console.
The power supply is internal to the console and connects to the TV using an RF cable.
The Polistil pong console is based on the "video game system IC TMS 1965": an integrated circuit that allows you to play different variants of Pong on a TV, requiring a small number of other external components.