* The droid's vocabulator speech/sound system makes the droid capable of reproducing virtually any sound it hears or is programmed to reproduce.
Protocol droids are vital in smoothing differences encountered by the many far-flung cultures interacting on a regular basis throughout the galaxy. Programmed in etiquette and equipped with formidable language skills, Protocol droids assist diplomats and politicians and also serve as administrative aides and companions for high-ranking officials. They come in as many shapes and sizes, but most are humanoid, like the company they keep. The J-75 is not and is design to be small and unobtrusive.
The J-75 can learn any skill and may become a teacher of that skill, but obviously the lack of any manipulator arms prevents it from carrying out any physical task.