Probably not a full computer, likely a Cortex M0. I’d be worried about long term firmware support given the client. I mean, it wouldn’t be too difficult to build something like this based on a super low powered phone SoC though.
I see. That way they can jump on the Pi toolchain for Debian under the hood. My fears are abated, but it’s still extremely expensive for what amounts to a Pi Zero, screen, battery and a PM3 easy (which would set you back about a third of their asking price)
my big question is firmware … which firmware branch is it using? i doubt you could jump branches and have the GUI still work… or even update it for that matter… the pm3 base hardware seems to be pretty finicky about matching the client and firmware