For the specific niche of a handheld device capable of up to ps1, on a screen that's small but big enough, that fits in your pocket, for this price, this is great. Some games that work well are pac-attack for gbc, tony hawk's pro skater for ps1, and pokémon fire red for gba. Controls are solid, d-pad works, face buttons work, shoulder buttons work. Battery life is a bit short but that isn't an issue for quick sessions while out.
I did install minui, and that makes short bursts of playtime super doable. For ~$30, this works great. I recommend retro gamp corps' video on this.
Received my trimui smart safe and sound, and pretty quickly too.
This thing is amazing! Right out of the box, no fiddling needed, just open the box, charge it up and play! Every game i tried to play on it ran just fine. All the way up to ps1. No n64 or psp as there is no analog stick, but literally everything ps1 and under is perfect. I even love the size of the screen!