This feels SO, SO good in the hands. Far better than I expected. And that's down to the chassis being metal, not plastic. It has heft, it feels durable, built like a tank, but it's not so heavy that it might fatigue you.
The d-pad is just firm enough, clicky, accurate (at least during my time with Tetris). The speaker is loud. The Sapphire screen is super bright! I have zero complaints about the hardware itself, aside from ModRetro shipping it before a rechargeable batt pack was ready.