So like..... Do they light up?

Or is it Bluetooth connection to your phone so a proprietary app can ~~harvest data~~ "track rolls to improve user experience" while just giving you an easy way to reference previous rolls?

I'm actually curious, I can't imagine why dice would need to charge unless they're light up.

And now I want a pair of light up dice that are brass and have some kind of draconic theme with bones and scales to make the number indicators...