This sound comes from the save function in Pokémon Red, Blue and Yellow, the original mainline Pokémon games released for Game Boy in the late 1990s. Online, the clip spread through game sound libraries, retro compilations and short meme edits because it communicates progress in less than two seconds. It is still used when creators want an old-school handheld feel or a quick audio signal that something has been successfully recorded, finished or made official.