[Gee, funny...Raven didn't bother to dignify that with a response. Moving closer, and ignoring that he was taller--everyone was taller really, as she took the device but held it so that he could see.]

So, where I'm from, devices like these are used as communicators, which seems to be the same use it has here. Messages can be sent from one device to the other, using something that's quite a bit more advanced, but not unlike radio waves, if that's familiar to you. If that isn't, I can try to think of an older analogy.

It's powered with electricity; both to use the various functions and for the device's operation itself. As a communication device, it's capable of sending and receiving messages in a text form, like a letter transmitted instantly to its recipient, or by an audio or video function. The Audio function just transmits a message using voice and sound, while the video presents a moving picture--like we were speaking earlier.

[Trying to both not insult his potential intelligence, as well as covering the general range of what the device was, and its functions. She couldn't quite tell when or where he might be from, so best to start generally.]

Please, don't hesitate to ask if I'm going too fast, or not explaining something well, Mr. Sebastian...