[Tony lets the sound wash over him as he turns the collar around in his hands. As much as he hates to say it, there's a cleverness to the design, and Tony finds himself running his fingers over as much of it as he can. Oh, this thing is getting taken to pieces as soon as he gets it back to the workshop.]

Definitely no needles. [He slips that in once it seems like Peter's wound down a bit.] Not entirely sure how it works yet, but it's not an injection. So it shouldn't still be in your bloodstream or anything.

[He glances briefly at Peter as he says it. Just in case the kid is worried.]

I'm gonna have to study this thing a bit closer. But thanks.