Brand New, very old megaphone called a Port-a-Call. 

Model UH-1

It comes with an AC adapter and is also battery operated (batteries included). 

It has a long list of pre-recorded songs/alerts that it plays. Their numbers are on the horn. It works as a regular bullhorn, too. 

Comes with the original operating manual. Other accessories listed in the booklet are not included; you will receive the horn, adapter and booklet only. 

This is brand new as you can see in the photos it was never taken out of the package or put together. The new owner of this will be the first to use.