Don't mention it. [Really, he's glad to help if only to make sure no one accidentally hurts a patient. Thankfully the only thing going on around here are routine check ups so at least no one is liable to seriously hurt anyone on accident. He hopes.

Anyway he takes his from around his neck.] It doesn't really cure people but it's helpful to check the vitals of the patient. It's more of a diagnosis tool. You're going to use it to listen to the person's heartbeat and breathing.

[He demonstrates how to wear it and puts the end against his own chest.] Like this. Try it.