That's understandable, it's a lot to take in.

[He rolls up his own sleeve to show her his Scrywatch.]

So I already mentioned that the colors on these things change, based on what I think is what you do on the islands, but there are other uses for it. You can actually use it to communicate with any of the other Travelers on the island. You can send both private messages as well as group ones. Here I'll show you.

[He moves a bit closer and then types out a small message that reads 'hello!' and sends it to her Scrywatch directly.]