Solid hardware, great screen, more capable even than advertised.
So we have a metal-body Game Boy Color, approximately the same size as the original, with a lovely backlit screen and optional rechargeable battery, plays original Game Boy/Color carts. So far, so good.
It's far easier to tear down and reassemble than original Nintendo hardware. Even better!
And... What's this? When you open it up there's a Micro SD card slot hidden in there! What can it do? You should Google that.
I just bought a Retroid Pocket Nova shortly before this. A far more capable and equally portable device, as is the Analogue Pocket. But the Chromatic chooses to do one thing, and does it fantastically: pixel-perfect screens are better than shaders and upscaling, it's great to play Game Boy games without excess buttons, and the Game Boy Color library is fantastically large with tons of classics.