Barbie 90's Beeper Pager with Back Clip
Remember the days when we didn't have cellphones and instead had pagers/beepers? These little pieces of tech beeped when someone was trying to call us and although they didn't let us call anyone back, they displayed a phone number so you could run to the nearest payphone and call them back.
I know!!! Archaic right? Doctors still use them so they are not completely a thing of the past.