Yeah, he nods to the eye-widening. Because that's about how strongly he feels about it. But he'll gesture to the mp3 player and reaches over to pick it up.

"The headphones, here, they go over your ears. And the machine itself? You click this bit here to make it play, this part to make it stop. These two let you go backwards or forwards. Want to give it a shot?"

He'll hold it out to her.