"It actually just disrupts the magic entirely for the person holding it when it's on." He made it to be used in the cinema, for people learning about the train's language, so it seemed easier to just temporarily disrupt the entire process. "So you won't be able to understand anyone not speaking languages you know while it's on either."

Ronan shrugs. There's no technical answer for how it works, because Ronan's magic almost entirely runs on "it works because I say it does," and this object in particular was just created with the intent of lifting the translation effect. It's orange just because that way people remember what team to return it to. It's a voice recorder just because that was the first shape that came to mind for what he wanted.