It kinda looks like a game king cartridge, from the inside bits (can’t find a pic of the whole thing), but that’s from the early 2000s. I went through a list of older handhelds and that’s the closest entry. But importantly, that probably isn’t it.
What you have is probably a regional knock-off sort of thing, or something that was never popular/prominent enough to be added to the wiki page.
This is the handheld list I went through. I stopped at the DS, as I assume yours is considerably older than that. Some of the old systems only have a handful of games for them, so it’s possible it’s something that just wasn’t made in large numbers, but my bet is on super-generic-knockoff-gamebay/gamboy/toyboy/gamekid handheld system (jokey knockoff names not real things afaik), which are not listed with the actual non-knockoff systems. (I wasn’t able to find much about vintage knockoff/copy systems)
https://en.m.wikipedia.org/wiki/List_of_handheld_game_consoles
As someone in a swing state, I’d be ok with that. Make the US like the EU.
For one thing, every 4 years residents of swing states get relentlessly harassed and it fucking sucks. But also It’s so so much easier to make changes on a smaller local level without the influence of distant populations. Sure it would suck in some ways and for some states, but maybe if each state only had to convince a few thousand people to do better, rather than literally millions (presidential election, very demoralizing), swing states would be more left leaning.
And if not, well it would probably be a lot easier to move states than move countries, even if they were EU style countries.