It's a clicker......used to notify when to move the slide show along or to train a dog....or whatever.
I have never seen such a fancy one....but it seems I always had several of the little cheap painted metal ones in a drawer.
Sometimes they are called a "cricket".
Linda C

I'm 65 years old and used to get them when I was a kid. They were the cheap painted ones. I didn't know that they served a purpose, except making a noise.

Ever been to a presentation accompanied by slides or charts projected from the rear, and when the presenter or lecturer wanted the slide or chart to change he or she would click a clicker....like the frog.

Clickers were also used on D Day by the parachuters who were supposed to click it on landing to find others who had landed in the dark and not have to speak, thus identifying themselves as Americans to the German soldiers or French citicens of St. Lo, I believe.