Maybe this conversation will help you:
In a store....
A= What on earth is this?
B= Oh, that´s called a Musical Finder.
A= Uhmm...Musical Finder I've never hear about that
B= Well, it's the most wonderful new gadget on the market today!
A= Oh really? What's it for?
B= It's used for finding things, and it´s terrific! Look. You clip it on your glasses at night so you can find them in the morning. Then you just clap twice and you hear a tune.
A= That´s sounds terrific! but I don't wear glasses.... thanks anyway.